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Test Name Series Completion ­1[OIR] Total Questions 15

Choose the correct alternative :

Choose the correct alternative and complete the given series
1. 1, 3, 5, 7, ?

a. 8
b. 9
c. 10

d. 11
Solution. (9)­ Progression of odd numbers.
Answer. b

2. 2, 5, 9, 14, ?

a. 16
b. 18
c. 20
d. 22
Solution. (20): the difference between the first two numbers is 3. The difference between the third and fourth number is 5, so that 6 must be the difference

between the fourth and fifth number, 14 plus 6 = 20.
Answer. c

3. 10, 5, 8, 4, 6, ?

a. 1

b. 3
c. 2
d. 7
Solution. (3): divide the sequence into sets of two numbers. The second number is one­half of the first number.
Answer. b

4. 3, 3, 9, 8, 4, 4, 16, 15, 5, 5, 25, ?

a. 24
b. 16

c. 20
d. 21
Solution. (24): divide numbers into groups of four. Multiply the first number and the second number to get the third number and then subtract one from

the third number to the fourth number.