20 ODD NUMERAL

1 >>Choose the number which is different from others in the group? ?

• (A) 10 + 9
• (B) 19 - 0
• (C) 95 / 5
• (D) 19 * 0

Solution 10 + 9 = 19

19 – 0 = 19

95 / 5 = 19

but 19 * 0 = 0

2 >>Choose the number which is different from others in the group? ?

• (A) 55 - 44
• (B) 121 / 11
• (C) 11 + 1
• (D) 11 * 1

Solution 55 - 44 = 11

121 / 11 = 11

11 * 1 = 11

but 11 + 1 = 12

3 >>Choose the number which is different from others in the group? ?

• (A) 1 + 5
• (B) 43452
• (C) 3 * 2
• (D) 6 * 3

Solution 1 + 5 = 6

18 – 12 = 6

3 * 2 = 6

but 6 * 3 = 18

4 >>Choose the number which is different from others in the group?

43 , 53 , 63 , 73 , 83 ?

• (A) 43
• (B) 53
• (C) 63
• (D) 73

Solution Each of the numbers except 63, is a prime number.

5 >>Choose the number which is different from others in the group? ?

• (A) 10
• (B) 26
• (C) 24
• (D) 21

Solution Each of the numbers except 21, is an even number.

6 >>Choose the number which is different from others in the group? ?

• (A) 144
• (B) 196
• (C) 126
• (D) 256

Solution Each of the number except 126, is a perfect square

7 >>Choose the number which is different from others in the group? ?

• (A) 32
• (B) 24
• (C) 60
• (D) 12

Solution Each of the number except 32, is divisible by 6

8 >>Choose the number which is different from others in the group? ?

• (A) 145
• (B) 361
• (C) 405
• (D) 424

Solution Each of the number except 405, sum of the digits in 10.

Sum of the digits in each number is 10 except 405

9 >>Choose the number which is different from others in the group? ?

• (A) 21
• (B) 83
• (C) 51
• (D) 63

Solution 83 is the only prime number in the group.

10 >>Choose the number which is different from others in the group?

385 , 572 , 671 , 264 , 427 ?

• (A) 572
• (B) 427
• (C) 385
• (D) 671

Solution In all other numbers, the middle digit is the sum of the other two

11 >>Choose the number which is different from others in the group? ?

• (A) 2345
• (B) 5678
• (C) 5467
• (D) 3456

Solution All other numbers contain four consecutive digits in order.

12 >>Choose the number which is different from others in the group? ?

• (A) 551
• (B) 414
• (C) 212
• (D) 400

Solution Each of the number except 400 , the product of the digits is a perfect square

13 >>Choose the number which is different from others in the group? ?

• (A) 238
• (B) 178
• (C) 538
• (D) 628

Solution In all other numbers, the last digit is the sum of the first two.

14 >>Choose or find odd number.

43 , 53 , 63 , 73 , 83 ?

• (A) 43
• (B) 53
• (C) 63
• (D) 73

Solution Each of the numbers except 63, is a prime number.

15 >>Choose or find odd number.

10 , 26 , 24 , 21 , 18 ?

• (A) 26
• (B) 24
• (C) 21
• (D) 18

Solution Each of the numbers except 21, is an even number.

16 >>Choose or find odd number.

51 , 144 , 64 , 121 , 256 ?

• (A) 51
• (B) 256
• (C) 121
• (D) 64

Solution Each of the number except 51, is a perfect square.

17 >>Choose or find odd number.

15 , 21 , 24 , 28 , 30 ?

• (A) 15
• (B) 28
• (C) 30
• (D) 21

Solution Each of the numbers except 28, is divisible by 3.

18 >>Choose or find odd number.

324 , 244 , 136 , 352 , 424 ?

• (A) 324
• (B) 244
• (C) 352
• (D) 424

Solution Sum of the digits in each other number is 10.

19 >>Choose or find odd number.

6,12,18,9,7 ?

• (A) 6
• (B) 12
• (C) 9
• (D) 7

Solution 7 is the only prime number in the group.

20 >>Choose or find odd number.

45 , 99 , 109 , 126 , 207 ?

• (A) 99
• (B) 126
• (C) 109
• (D) 207

Solution Each of the numbers except 109, is divisible by 9.