Question 1

Find the wrong number in the given series : 26, 20, 16, 11, 8, 6, 5

Accepted Answer

26 - 6 = 20 20 - 5 = 15 15 - 4 = 11 11 - 3 = 8 8 - 2 = 6 6 - 1 = 5 Therefore, 16 is wrong number.

Question 2

Find the next number in the series 5, 8, 16, 19, 57, 60, .....

Accepted Answer

The pattern is x1+3, x 2, x1+3, x 3, x1+3, x 4 The next number=60x4=240

Question 3

Find out the wrong term in the series 3, 7, 15, 39, 63, 127, 255, 511

Accepted Answer

The correct pattern is *2+1 So, 39 is wrong and must be replaced by (15 * 2 + 1) = 31

Question 4

Choose the missing terms out of the given alternatives Y, B, T, G, O, ?

Accepted Answer

The given sequence is a combination of two series: i.)Y,T, O and ii.)B, G, ? i. consists of 2nd, 7th, 12th letters from end of English alphabet,while ii. consists of 2nd, 7th, 12th letters from beginning of English alphabet So, the missing letter in ii.) is the 12th letter from the beginning of English alphabet,which is L.

Question 5

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. BMO, EOQ, HQS, ?

Accepted Answer

The first letter moves 3 steps forward. The second and third letters move 2 steps forward.

Question 6

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. EJO, TYD, INS, XCH ?

Accepted Answer

There is a gap of four letters between the first and second, the second and third letters. There is a gap of four letters between the last letter and the first letter of the next term.

Question 7

What letters will fill the blank? Z, X, V, T, R, __,__

Accepted Answer

Here the letter series is alternative reverse order series. So we get P, N.

Question 8

In following question, a number series is given with one term missing. Choose the correct alternative for these sequence. 24, 60, 120, 210, ?

Accepted Answer

3 x 3 x 3 = 27 - 3 = 24 4 x 4 x 4 = 64 - 4 = 60 5 x 5 x 5 = 125 - 5 = 120 6 x 6 x 6 = 216 - 6 = 210 7 x 7 x 7 = 343 - 7 = 336

Question 9

Find the next number in the given sequence? 1, 2, 6, 21, 88, ?

Accepted Answer

The given series is 1, 2, 6, 21, 88, ? 1 1 x 1 + 1 = 2 2 x 2 + 2 = 6 6 x 3 + 3 = 21 21 x 4 + 4 = 88 88 x 5 + 5 = 445 Hence, the next number in the given number sequence is 445.

Question 10

Which fraction comes next in the sequence 23, 13, 527, 781, ?

Accepted Answer

Clearly, the numerators of the fractions in the given sequence follow the series of 2, 3, 5, 7,... and the denominator follows 3, 9, 27, 81, 243, ... Then, the next term in the given sequence is 9 3 5 = 9 243 = 1 27 .

Question 11

_ po _ mp _ n _ _ onmpo_.

Accepted Answer

The pattern 'mpon' is repeated.

Question 12

Look at the series : 3, 7, 24, 11, __, 19, 19,... What number should fill the blank ?

Accepted Answer

Two series alternate here, with every third number following a different pattern. In the main series, 4 is added to each number to arrive the next. In alternate series, 5 is subtracted from each number t arrive the next number. Here in the main series 3 + 4 = 7 7 + 4 = 11 11 + 4 = 15 15 + 4 = 19 In alternate series 24 - 5 = 19 19 - 5 = 14...

Question 13

Choose the correct alternative that will continue the same pattern and replace 'x' in series 5,15,17,85,89,623,x

Accepted Answer

The pattern is *3,+2,*5,+4,*7,+6, . . . . . So missing term is 623+6=629

Question 14

Find the missing number in the given number series? 1 8 36 ? 1100 7701

Accepted Answer

The given number series is 1 8 36 ? 1100 7701 It follows a pattern that, 1 1 x 3 + 5 = 8 8 x 4 + 4 = 36 36 x 5 + 3 = 183 183 x 6 + 2 = 1100 1100 x 7 + 1 = 7701 Hence, the missing number in the given series is 183.

Question 15

Find out the wrong term in the series 125, 126, 124, 127, 123, 129

Accepted Answer

The correct pattern is +1, -2, +3, -4, +5, . . . . So,129 wrong and must be replaced by 123 + 5 = 128

Question 16

__bam__amb__m__a__bam

Accepted Answer

Here "mba" is repeated m b a m b a m b a m b a m b a m

Question 17

Which number replaces the '?' in the given series 108, 127, 2413, 2430, 41310, ?, 619875

Accepted Answer

The given series follows a pattern of +19, x19, +17, x17, +15, x15,... Here the number which is to be replaced in ? is 41310+15=41325.

Question 18

What is the next number in series? 10, 9, 60, 90, 70, 66, ?

Accepted Answer

ten = 3(number of letters) nine = 4(number of letters) sixty = 5(number of letters) ninety = 6(number of letters) seventy = 7(number of letters) sixtysix = 8(number of letters) ninetysix=96(number of letters) Then, likwise choose the number which has 9 letters in its Spelling.

Question 19

Find the wrong number from the following series ? 37 47 52 67 87 112 142

Accepted Answer

The given series follows the rule, +(5x1), +(5x2), +(5x3), +(5x4), +(5x5),.... So starting from 37, 37 + 5 = 42, 42 + 10 = 52, 52 + 15 = 67, 67 + 20 = 87,... So wrong number is 47 which is to be 42.

Number Series Questions