Question 1

Choose the correct alternative that will continue the same pattern and replace 'x' in series 4,9,25,x,121,169,289,361

Accepted Answer

The given series consists of squares of consecutive prime numbers 2*2, 3*3, 5*5, . . . . , 11*11, 13*13, 17*17

Question 2

Choose the correct alternative that will continue the same pattern and replace the 'x' in the series 525, 430, 345, 270, x

Accepted Answer

The pattern is -95, -85, -75, -65, . . . .

Question 3

Choose the missing terms out of the given alternatives T, R, P, N, L, ?, ?

Accepted Answer

T - 2 = R R - 2 = P P - 2 = N N - 2 = L L - 2 = J J - 2 = H

Question 4

Choose the missing terms out of the given alternatives ejo, tyd, ins, xch, ?

Accepted Answer

There is a gap of 4 letters between the first and second, second and third letters of each term, and also between the last letter of the term and first letter of next term

Question 5

In the following question a letter-series is given, in which some letters are missing. The missing letters are given in the proper sequence as one of the alternatives. Choose the correct alternatives. ba_ba_bac_acb_cbac

Accepted Answer

The series is bac/bac/bac/bac/bac/bac. The pattern bac is repeated.

Question 6

Find the missing number in the following series? 2, 3, 10, 39, ?, 885

Accepted Answer

Take a Look at the below sereies 2 × 1 + 1 2 = 3 3 × 2 + 2 2 = 10 10 × 3 + 3 2 = 39 39 × 4 + 4 2 = 172 172 × 5 + 5 2 = 885

Question 7

Find out the wrong term in the series 1, 5, 9, 15, 25, 37, 49

Accepted Answer

The terms of the given series is 1*1, 2*2 + 1, 3*3, 4*4 +1, 5*5, 6*6 + 1, . . . . . So, 15 is wrong and must be replaced by (4*4 + 1) = 17

Question 8

What will come in the place of the (?) in the following number series ? 5 14 45 130 (?) 1182

Accepted Answer

The pattern of given series is : 5 14 = (5x3) - 1 45 = (14x3) + 3 130 = (45x3) - 5 (?) = (130x3) + 7 => (?) = 397 1182 = (397x3) - 9 Thus, the missing number is 397.

Question 9

Find the next number in the series given 18, 90, 450, 2250, ?

Accepted Answer

The given number series is 18, 90, 450, 2250, ? 18 18 x 5 = 90 90 x 5 = 450 450 x 5 = 2250 2250 x 5 = 11250 Hence, the next number in the given series is 11250.

Question 10

3, 6, 17.5, 64.75, ?

Accepted Answer

3 3 x 1.5 + 1.5 = 6 6 x 2.5 + 2.5 = 17.5 17.5 x 3.5 + 3.5 = 64.75 64.75 x 4.5 + 4.5 = 295.875

Question 11

Choose the missing terms out of the given alternatives ADVENTURE,DVENTURE, DVENTUR, ? , VENTU

Accepted Answer

one of the letter from beginning and one of the letter from the end of a term are removed, one by one, alternate steps

Question 12

Whether the last number 240 in the following series is according to the remaining numbers pattern ? 2, 4, 12, 48, 240

Accepted Answer

The given series follows, 2 2 x 2 = 4 4 x 3 = 12 12 x 4 = 48 48 x 5 = 240.

Question 13

Find the missing number in the given series ? 15, 51, 216, 1100, ?, 46452

Accepted Answer

Let first no. be "k" and multiple be "l"...start value of y with 3 then, [(k x y) + {l x (l-1)}] Thus, we get 15 x 3 + 3 x 2 = 51 51 x 4 + 4 x 3 = 216 216 x 5 + 5 x 4 = 1100 1100 x 6 + 6 x 5 = 6630 6630 x 7 + 7 x 6 = 46452 Therefore, the missing number is 6630.

Question 14

Find out the wrong term in the series 3, 4, 10, 32, 136, 685, 4116

Accepted Answer

The correct pattern is *1+1, *2+2, *3+3, *4+4, . . . . . So,32 is wrong term and must be replaced by (10 * 3 + 3) = 33

Question 15

In the folowing questions pickout the most sutiable substitute for the question mark? 6 : 222 :: 25 : ?

Accepted Answer

6 3 + 6 = 222 Similarly , 25 3 + 25 = 15650

Question 16

Find the odd man out of the series 888, 440, 216, 104, 48, 22, 6 ?

Accepted Answer

In the given series, 2nd term = 1 s t t e r m - 8 2 = 888 - 8 2 = 440 3rd term = 2 n d t e r m - 8 2 = 440 - 8 2 = 216 and so on... Here 6th term = 5 t h t e r m - 8 2 = 48 - 8 2 = 20 Therefore, 22 is wrong.

Question 17

Find the odd man out of the series 4, 5, 9, 18, 32, 59

Accepted Answer

In the given series, 2nd term = 1st term + 1 2 = 4 +1 = 5 3rd term = 2nd term + 2 2 =5+4= 9 4th term = 3rd term + 3 2 =9+9=18 5th term = 4th term + 4 2 = 18+16=34 Therefore, odd term is 32

Question 18

_ tu _ rt _ s _ _ usrtu _

Accepted Answer

The series rtus/rtus/rtus/rtus. Thus, the pattern 'rtus' is repeated.

Question 19

Find the missing number in series 1 4 27

Accepted Answer

It follows the rule that 1 2x2 3x3x3 4x4x4x4 5x5x5x5x5 So the missing number is 4x4x4x4 = 256.

Question 20

What will be the next term in BKS, DJT, FIU, HHV, __

Accepted Answer

Here the first letter of the group is moved with a gap of one letter, the second letter of the group is backwardness and the third letter of the group is forwardness proceeding like this we get the letter group "JGW"

Number Series Questions