Logical Reasoning Questions and Answers

Showing 1 - 10 of 23 questions

Complete the series 1,6,13,22,33,..

correct answer a

Pattern is +5, +7, +9, +11
So next number will be +13
=> 33+13 = 46

Complete the series 3, 7, 23, 95, ?

128

479

575

correct answer c

3( *2 +1)→ 7( *3 +2) → 23( *4 +3)→ 95( *5 +4)→ 479.

Complete the series 7, 26, 63, 124, 215, 342, ?

391

511

481

421

correct answer b

The terms are given in a series
(2³ -1) = 7
(3³ -1) = 26
(4³ -1) = 63
(5³ -1) = 124
(6³ -1) = 215
(7³ -1) = 342
So, the missing term is,
(8³ -1) = 511.

Complete the series 165, 195, 255, 285, 345, ?

390

420

435

375

correct answer c

Each number of given series is 15 multiplied by a prime number.
15*11, 15*13, 15*17, 15*19, 15*23. . . . So, Missing number is
15*29 = 435.

Complete the Series 34, 45, 56, 67.......

correct answer a

34(+11) → 45(+11) → 56(+11) →67 (+11) → 78.

In the following number series a wrong number is given. Find out the wrong number.
150, 450, 750, 1060, 1350, 1650, 1950

1060

1950

450

1350

correct answer a

By adding 300 to each term, we get the next term. 1060 is wrong term. It should be 1050.

Complete the series 5690, 5121, 4552, 3983, 3414, 2845, ?

2276

2516

2356

2456

correct answer a

By subtracting 569, we get the next term.
Required number,
= 2845-569
= 2276.

Complete the series 6, 13, 28, 59, ?, 249.

276

122

235

correct answer b

First term → 6
Second term → (6*2+1) = 13
Third term → (13*2+2) = 28
Fourth term → (28*2+3) = 59
Fifth term → (59*2+4) = 122
Sixth term → (122*2+5) = 249
So, the required term = 122.

Complete the series 4, 8, 10, 14, 16, 20, ?

correct answer a

Above series contains two sub-series in it.

4, 10, 16, 22

8, 14, 20

Each of both term there is difference of 6 i.e. next term is 6 greater than previous term.

Complete the series 9, 17, 33, 65, ?

129

correct answer c

First term → 9

Second term → (9 *2 -1) = 17

Third term → (17 *2 -1) = 33

Fourth term → (33 *2 -1) = 65

Fifth term → (65 *2 -1) = 129

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