# Complete the Fill in the Blanks :

Directions: (Q. No. 1-5)
Complete the fill in the blanks:

1. 6, 12, 20, 30, ___, 56, 72
(a) 32                                (b) 36                        (c) 40                        (d) 42
2. 26, 37, 48, 59, ____
(a) 70                                (b) 65                        (c) 60                        (d) 55
3. 2/3, 7/9, 12/15, ___, 22/27
(a) 15/2                             (b) 17/21                  (c) 18/21                   (d) 20/21
4. 15, 10, 35, 12, 60, 15, 90, ___
(a) 16                                 (b) 17                         (c) 18                         (d) 19
5. 4, 16, 36, ____, 100, 144
(a) 52                                 (b) 58                         (c) 64                        (d)  68

1. 42

Explanation:-
6 + 6 = 12,  12 + 6 + 2
= 12 + 8
= 20,
20 + 8 + 2
= 20 + 10
= 30,
30 + 10 + 2
30 + 12
= 42

Then, the missing number is 42.

Hence, the correct answer is option (d) 42.

2. 70

Explanation:-
26 + 11 = 37,
37 + 11 = 48,
48 + 11 = 59,

Same as,
59 + 11 = 70.

Then, the missing number is 70.

Hence, the correct answer is (a) 70.

3. 17/21

Explanation:-
(2 + 5)/(3 + 6) = 7/9,
(7 + 5)/(9 + 6) = 12/15,

Same as,
(12 + 5)/(15 + 6) = 17/21

Then, the next number is 17/21.

Hence, the correct answer is option (b) 17/21.

4. 19

Explanation:-
15 + 20 = 35  &  10  + 2 = 12,
35 + 20 + 5 = 60  &  12 + 3 = 15,
60 + 30 + 5 =  90  &  15 + 4 = 19.

Then, the next number is 19.

Hence, the correct answer is (d) 19.

5. 64

Explanation:-
2^2 = 2 x 2
= 4,
4^2 = 4 x 4
= 16,
6^2 = 6 x 6
= 36

Same as, 8^2 = 8 x 8
= 64.

Hence, the correct answer is option (c) 64.