number system problems with solutions - Wikitechy https://www.wikitechy.com/interview-questions/tag/number-system-problems-with-solutions/ Interview Questions Mon, 20 Sep 2021 10:21:09 +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 number system problems with solutions - Wikitechy https://www.wikitechy.com/interview-questions/tag/number-system-problems-with-solutions/ 32 32 16, 24, 48, 120, 360, 1260, ? https://www.wikitechy.com/interview-questions/number-series/16-24-48-120-360-1260/ https://www.wikitechy.com/interview-questions/number-series/16-24-48-120-360-1260/#respond Wed, 18 Aug 2021 17:24:28 +0000 https://www.wikitechy.com/interview-questions/?p=2392

16, 24, 48, 120, 360, 1260, ?

A. 3780

B. 4725

C. 5355

D. 5040

E. 4410

Answer : D. 5040

Explanation:

The given numbers series is based on the following patterns :
16 x 1.5 = 24
24 x 2 = 48
48 x 2.5 = 120
120 x 3 = 360
360 x 3.5 = 1260
∴ ? = 1260 x 4 = 5040

]]> https://www.wikitechy.com/interview-questions/number-series/16-24-48-120-360-1260/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