aptitude test - Wikitechy https://www.wikitechy.com/interview-questions/tag/aptitude-test/ Interview Questions Mon, 20 Sep 2021 10:16:26 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png aptitude test - Wikitechy https://www.wikitechy.com/interview-questions/tag/aptitude-test/ 32 32 Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5 ? https://www.wikitechy.com/interview-questions/probability/tickets-numbered-1-to-20-are-mixed-up-and-then-a-ticket-is-drawn-at-random-what-is-the-probability-that-the-ticket-drawn-has-a-number-which-is-a-multiple-of-3-or-5/ https://www.wikitechy.com/interview-questions/probability/tickets-numbered-1-to-20-are-mixed-up-and-then-a-ticket-is-drawn-at-random-what-is-the-probability-that-the-ticket-drawn-has-a-number-which-is-a-multiple-of-3-or-5/#respond Wed, 18 Aug 2021 01:48:27 +0000 https://www.wikitechy.com/interview-questions/?p=2032

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5 ?

A. 1/2

B. 2/5

C. 8/12

D. 9/20

Answer : D. 9/20…

Explanation:

Here, S = {1, 2, 3, 4, 19, 20}.
Let E = event of getting a multiple of 3 or 5
= {3, 6 , 9, 12, 15, 18, 5, 10, 20}.
P(E) = n(E) / n(S)
= 9/20

]]> https://www.wikitechy.com/interview-questions/probability/tickets-numbered-1-to-20-are-mixed-up-and-then-a-ticket-is-drawn-at-random-what-is-the-probability-that-the-ticket-drawn-has-a-number-which-is-a-multiple-of-3-or-5/feed/ 0 In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ? https://www.wikitechy.com/interview-questions/probability/in-a-box-there-are-8-red-7-blue-and-6-green-balls-one-ball-is-picked-up-randomly-what-is-the-probability-that-it-is-neither-red-nor-green/ https://www.wikitechy.com/interview-questions/probability/in-a-box-there-are-8-red-7-blue-and-6-green-balls-one-ball-is-picked-up-randomly-what-is-the-probability-that-it-is-neither-red-nor-green/#respond Wed, 18 Aug 2021 01:43:40 +0000 https://www.wikitechy.com/interview-questions/?p=2029

In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ?

A. 1/3

B. 3/4

C. 7/19

D. 8/21

E. 9/21

Answer : A. 1/3

Explanation:

Total number of balls = (8 + 7 + 6) = 21.
Let E = event that the ball drawn is neither red nor green
= event that the ball drawn is blue.
n(E) = 7
P(E) = n(E)/n(S)
= 7/21
= 1/3

]]> https://www.wikitechy.com/interview-questions/probability/in-a-box-there-are-8-red-7-blue-and-6-green-balls-one-ball-is-picked-up-randomly-what-is-the-probability-that-it-is-neither-red-nor-green/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 Which of the following numbers must be added to 5678 to give a reminder 35 when divided by 460 ? https://www.wikitechy.com/interview-questions/numbers/which-of-the-following-numbers-must-be-added-to-5678-to-give-a-reminder-35-when-divided-by-460/ https://www.wikitechy.com/interview-questions/numbers/which-of-the-following-numbers-must-be-added-to-5678-to-give-a-reminder-35-when-divided-by-460/#respond Tue, 17 Aug 2021 18:46:48 +0000 https://www.wikitechy.com/interview-questions/?p=1875

Which of the following numbers must be added to 5678 to give a reminder 35 when divided by 460 ?

A. 980

B. 797

C. 955

D. 618

Answer : B. 797

Explanation:

  • If we remove the remainder from number, 5678-35 = 5643
  • 5643 should be divisible by 460, means the unit digit must be 5 if we add any number from options.
  • The only number 797 can give the unit digit 5, So answer is 797.
]]> https://www.wikitechy.com/interview-questions/numbers/which-of-the-following-numbers-must-be-added-to-5678-to-give-a-reminder-35-when-divided-by-460/feed/ 0 A number is divided by 5, 3, 2 successively in order to get remainders of 0, 2, 1 respectively. What will be the remainder when the same number is divided by 2, 3, 5 respectively ? https://www.wikitechy.com/interview-questions/numbers/a-number-is-divided-by-5-3-2-successively-in-order-to-get-remainders-of-0-2-1-respectively-what-will-be-the-remainder-when-the-same-number-is-divided-by-2-3-5-respectively/ https://www.wikitechy.com/interview-questions/numbers/a-number-is-divided-by-5-3-2-successively-in-order-to-get-remainders-of-0-2-1-respectively-what-will-be-the-remainder-when-the-same-number-is-divided-by-2-3-5-respectively/#respond Tue, 17 Aug 2021 18:44:57 +0000 https://www.wikitechy.com/interview-questions/?p=1874

A number is divided by 5, 3, 2 successively in order to get remainders of 0, 2, 1 respectively. What will be the remainder when the same number is divided by 2, 3, 5 respectively ?

A. 4, 3, 2

B. 1, 0, 4

C. 2, 1, 3

D. 4, 1, 2

Answer : B. 1, 0, 4…

Explanation:

Let the number = N.
Now N = 5K
K = 3L + 2
L = 2M + 1
K = 3 (2M + 1) + 2
= 6M + 5
N = 5 (6M + 5)
= 30 M + 25.

For M = 0 we get the least number as 25. Now when 25 is divided by 2, we get 12 as quotient and 1 as remainder.
When 12 is divided by 3 we get 4 as quotient, and 0 as remainder. When 4 is divided by 5 we get 4 as remainder.

]]> https://www.wikitechy.com/interview-questions/numbers/a-number-is-divided-by-5-3-2-successively-in-order-to-get-remainders-of-0-2-1-respectively-what-will-be-the-remainder-when-the-same-number-is-divided-by-2-3-5-respectively/feed/ 0 A long thin strip of width 7cm is kept on a flat surface. Another identical strip is kept on it in an overlapping manner such that the combined width of the two is 11 cm. What is the width of 55 such strips kept like this ? https://www.wikitechy.com/interview-questions/puzzles/a-long-thin-strip-of-width-7cm-is-kept-on-a-flat-surface-another-identical-strip-is-kept-on-it-in-an-overlapping-manner-such-that-the-combined-width-of-the-two-is-11-cm-what-is-the-width-of-55-such/ https://www.wikitechy.com/interview-questions/puzzles/a-long-thin-strip-of-width-7cm-is-kept-on-a-flat-surface-another-identical-strip-is-kept-on-it-in-an-overlapping-manner-such-that-the-combined-width-of-the-two-is-11-cm-what-is-the-width-of-55-such/#respond Fri, 06 Aug 2021 08:28:40 +0000 https://www.wikitechy.com/interview-questions/?p=1617

A long thin strip of width 7cm is kept on a flat surface. Another identical strip is kept on it in an overlapping manner such that the combined width of the two is 11 cm. What is the width of 55 such strips kept like this ?

11cm is combined width for 2 strips ,

11-7= 4cm is extra width for each overlapped strip.
Hence 4*53 = 212 (Remaining 53 strips)
212 + 11 = 223 (Previous 2 strips)

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