problems on numbers aptitude - Wikitechy https://www.wikitechy.com/interview-questions/tag/problems-on-numbers-aptitude/ Interview Questions Mon, 20 Sep 2021 10:21:09 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png problems on numbers aptitude - Wikitechy https://www.wikitechy.com/interview-questions/tag/problems-on-numbers-aptitude/ 32 32 The pulse rate of a person is 15 beats in 10 seconds. At this rate, what will be pulse rate of the person per minute ? https://www.wikitechy.com/interview-questions/numbers/the-pulse-rate-of-a-person-is-15-beats-in-10-seconds-at-this-rate-what-will-be-pulse-rate-of-the-person-per-minute/ https://www.wikitechy.com/interview-questions/numbers/the-pulse-rate-of-a-person-is-15-beats-in-10-seconds-at-this-rate-what-will-be-pulse-rate-of-the-person-per-minute/#respond Tue, 17 Aug 2021 19:40:59 +0000 https://www.wikitechy.com/interview-questions/?p=1905

The pulse rate of a person is 15 beats in 10 seconds. At this rate, what will be pulse rate of the person per minute?

A. Data insufficient

B. 100 beats per minute

C. 90 beats per minute

D. 150 beats per minute

Answer : C. 90 beats per minute

Explanation:

A person pulse rate in 10 seconds = 15.
A person pulse rate of one second 15/10 = 1.5.
A person pulse rate at one minute is 60 * 1.5 = 90.
A person pulse rate is 90 beats per minute.

]]> https://www.wikitechy.com/interview-questions/numbers/the-pulse-rate-of-a-person-is-15-beats-in-10-seconds-at-this-rate-what-will-be-pulse-rate-of-the-person-per-minute/feed/ 0 The average of 7 numbers is 60. The average of the first three numbers is 50, while the average of the last three is 70. What must be the remaining number ? https://www.wikitechy.com/interview-questions/numbers/the-average-of-7-numbers-is-60-the-average-of-the-first-three-numbers-is-50-while-the-average-of-the-last-three-is-70-what-must-be-the-remaining-number/ https://www.wikitechy.com/interview-questions/numbers/the-average-of-7-numbers-is-60-the-average-of-the-first-three-numbers-is-50-while-the-average-of-the-last-three-is-70-what-must-be-the-remaining-number/#respond Tue, 17 Aug 2021 19:38:00 +0000 https://www.wikitechy.com/interview-questions/?p=1901

The average of 7 numbers is 60. The average of the first three numbers is 50, while the average of the last three is 70. What must be the remaining number ?

A. 75

B. 60

C. 65

D. 55

Answer : B. 60

Explanation:

The sum of all the seven numbers = 60 * 7 = 420
The sum of the first three = 50 * 3 = 150
The sum of the last three = 70 * 3 = 210
Remaining Number = 420 – (210 + 150) = 60

]]> https://www.wikitechy.com/interview-questions/numbers/the-average-of-7-numbers-is-60-the-average-of-the-first-three-numbers-is-50-while-the-average-of-the-last-three-is-70-what-must-be-the-remaining-number/feed/ 0 Which of the following numbers is not divisible by 14 ? https://www.wikitechy.com/interview-questions/numbers/which-of-the-following-numbers-is-not-divisible-by-14/ https://www.wikitechy.com/interview-questions/numbers/which-of-the-following-numbers-is-not-divisible-by-14/#respond Tue, 17 Aug 2021 19:36:34 +0000 https://www.wikitechy.com/interview-questions/?p=1900

Which of the following numbers is not divisible by 14 ?

A. 3542

B. 2086

C. 1998

D. 2996

Answer : C. 1998

Explanation:

3542 / 14 = 253
2086 / 14 = 149
1998 / 14 = 142.714
2996 / 14 = 214
Option C is not divisible by 14

]]> https://www.wikitechy.com/interview-questions/numbers/which-of-the-following-numbers-is-not-divisible-by-14/feed/ 0 If Shalu buys 6 more apples, his carton will weight 14.5 kilograms. If the weight of one apple is 250 grams. How many apples did he initially had in his carton ? https://www.wikitechy.com/interview-questions/numbers/if-shalu-buys-6-more-apples-his-carton-will-weight-14-5-kilograms-if-the-weight-of-one-apple-is-250-grams-how-many-apples-did-he-initially-had-in-his-carton/ https://www.wikitechy.com/interview-questions/numbers/if-shalu-buys-6-more-apples-his-carton-will-weight-14-5-kilograms-if-the-weight-of-one-apple-is-250-grams-how-many-apples-did-he-initially-had-in-his-carton/#respond Tue, 17 Aug 2021 19:29:28 +0000 https://www.wikitechy.com/interview-questions/?p=1896

If Shalu buys 6 more apples, his carton will weight 14.5 kilograms. If the weigh of one apple is 250 grams. How many apples did he initially had in his carton ?

A. 58

B. 56

C. 54

D. 52

Answer : D. 52

Explanation:

Weight of 1 apple = 250 g
Weight of 6 apples = 250 * 6 = 1.5 kg
Initial weight = 14.5 – 1.5 = 13 kg
Number of apples in his carton initially :
= 13000/250
= 52 apples

]]> https://www.wikitechy.com/interview-questions/numbers/if-shalu-buys-6-more-apples-his-carton-will-weight-14-5-kilograms-if-the-weight-of-one-apple-is-250-grams-how-many-apples-did-he-initially-had-in-his-carton/feed/ 0 The total number of two-digit positive integer lesser than 100, which are not divisible by 2, 3 and 5 is ? https://www.wikitechy.com/interview-questions/numbers/the-total-number-of-two-digit-positive-integer-lesser-than-100-which-are-not-divisible-by-2-3-and-5-is/ https://www.wikitechy.com/interview-questions/numbers/the-total-number-of-two-digit-positive-integer-lesser-than-100-which-are-not-divisible-by-2-3-and-5-is/#respond Tue, 17 Aug 2021 19:24:22 +0000 https://www.wikitechy.com/interview-questions/?p=1908

The total number of two-digit positive integer lesser than 100, which are not divisible by 2, 3 and 5 is ?

A. 23

B. 24

C. 25

D. 26

Answer : B. 24

Explanation:

Numbers less than 100 divisible by 2 are 10, 12, 14, 16,…,98.
Total numbers divisible by 2 are 45
Remaining numbers are 11, 13, 15, 17, 19…99 = 45

Numbers divisible by 3 in the above numbers are 15, 21, 27, 33, 39, 45, 51, 57, 63, 69, 75, 81, 87, 93 and 99.
Total numbers divisible by 3 are = 15
Remaining integers = 45-15 = 30.

Numbers divisible by 5 in the remaining numbers = 25, 35, 55, 65, 85, 95
Total numbers = 6
Remaining 30-6 = 24.

So 24 numbers are not divisible by 2, 3 and 5.

]]> https://www.wikitechy.com/interview-questions/numbers/the-total-number-of-two-digit-positive-integer-lesser-than-100-which-are-not-divisible-by-2-3-and-5-is/feed/ 0 A and B are two number when divided by 7 leaves a remainder 3 and 5. What will be the remainder when A-B is divided by 7 ? https://www.wikitechy.com/interview-questions/numbers/a-and-b-are-two-number-when-divided-by-7-leaves-a-remainder-3-and-5-what-will-be-the-remainder-when-a-b-is-divided-by-7/ https://www.wikitechy.com/interview-questions/numbers/a-and-b-are-two-number-when-divided-by-7-leaves-a-remainder-3-and-5-what-will-be-the-remainder-when-a-b-is-divided-by-7/#respond Tue, 17 Aug 2021 19:03:37 +0000 https://www.wikitechy.com/interview-questions/?p=1883

A and B are two number when divided by 7 leaves a remainder 3 and 5. What will be the remainder when A-B is divided by 7 ?

A. 4

B. 5

C. 6

D. 7

Answer : B. 5

Explanation:

A = 7x + 3,
B = 7y + 5
A – B = 7(x – y) – 2
A – B = 7(x – y) – 7 + 7 – 2 [By adding -7 and +7] A – B = 7(x – y – 1) + 5
As seen above, if we divide A-B by 7, the remainder will be 5.

]]> https://www.wikitechy.com/interview-questions/numbers/a-and-b-are-two-number-when-divided-by-7-leaves-a-remainder-3-and-5-what-will-be-the-remainder-when-a-b-is-divided-by-7/feed/ 0 Find the non leap year in between 1801 to 1900 ? https://www.wikitechy.com/interview-questions/calendar/find-the-non-leap-year-in-between-1801-to-1900/ https://www.wikitechy.com/interview-questions/calendar/find-the-non-leap-year-in-between-1801-to-1900/#respond Tue, 17 Aug 2021 18:31:31 +0000 https://www.wikitechy.com/interview-questions/?p=1869

Find the non leap year in between 1801 to 1900 ?

Answer : 76

Explanation

  • The important 3 ways is used to find the leap years,
    • The year is evenly divisible by 4
    • If the year can be evenly divided by 100, it is NOT a leap year.
    • If the year is also evenly divisible by 400. Then it is a leap year.
  • So by these rules, the years 400, 404, 408, 800, 896, 1200, 1600, 2000, 2004 and so on are leap years, while 500, 600, 700.. 1100, 2100 aren’t leap years as they aren’t divisible by 400( though divisible by 4 and 100)
  • Between 1795 and 1805 the leap years were 1796 and 1804. 1800 wasn’t a leap year. And between 1995 and 2005 the leap years were 1996, 2000 and 2004.
  • So by this logic NOT ALL 100 years have 24 leap years and 76 non-leap years.
  • For example: Years 1801 – 1900 had 24 leap years:
1804, 1808, 1812, 1816, 1820, 1824, 1828, 1832, 1836, 1840, 1844, 1848, 1852, 1856, 1860, 1864, 
1868, 1872, 1876, 1880, 1884, 1888, 1892, 1896.
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