Logical Reasoning Questions and Answers
Complete the series 1,6,13,22,33,..
Pattern is +5, +7, +9, +11
So next number will be +13
=> 33+13 = 46
Complete the series 3, 7, 23, 95, ?
3( *2 +1)→ 7( *3 +2) → 23( *4 +3)→ 95( *5 +4)→ 479.
Complete the series 7, 26, 63, 124, 215, 342, ?
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, ?
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.......
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
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, ?
By subtracting 569, we get the next term.
Required number,
= 2845-569
= 2276.
Complete the series 6, 13, 28, 59, ?, 249.
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, ?
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, ?
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
