WeCP Number Series Quiz 1

Answer - Option A

Solution:

Here, the following two series are going on:

Answer - Option B

Solution:

Let, at any position i, the number is given by n.

Therefore,

The number at (i+1)th position is given by

= n^2 + n - 2

Hence, 11770^2 + 11770 - 2 = 138544668

Answer: Option A


Solution:

Answer - Option B

Solution:

Each number is subtracted by the sum of it’s digit.

108 - (1+0+8) = 99

99 - (9+9) = 81

81 - (8+1) = 72

72 - (7+2) = 63

Answer - Option B

Solution:

Answer - option B

Solution:

Algorithm:

n^2 -(sum of its digit)

3^2- 3= 6

6^2- 6= 30

30^2- 3 = 897

897^2- 22= 804587

Answer - Option D

Solution:

Odd placed numbers are multiplied by 5 and then added by 4.

Even placed numbers are subtracted by 25.

here, 99X5 = 495 (+4) = 499

Answer - Option A

Solution:

4x3+7 = 19

19x3+6 = 65

65x3+5 =200

200x3+4 = 604

604x3+3 = 1815

Answer - Option C

Solution:

Algorithm:

n^2 +(sum of its digit)

3^2+ 3= 12

12^2+ 3= 147

147^2+ 12= 21621

21621^2+ 12= 467467653

Answer -Option B


Solution: