Series and coding-decoding practice set 1

Question 1

Find the missing number: 10, 17, 26, 37, 50, ?

Accepted Answer

65

Question 2

In a certain code, STONE is written as TUPOF. How is PLANT written in that code?

Accepted Answer

QMBOU

Question 3

Which letter is 6th to the left of the 13th letter from the right in the English alphabet?

Accepted Answer

H

Question 4

If COW = 41 in a code where each letter stands for its position in the alphabet (A = 1, B = 2, …) and the values are added, what is SUN?

Accepted Answer

54

Question 5

Which comes next? E, G, I, K, ?

Accepted Answer

M

Question 6

Find the missing number: 6, 18, 54, 162, 486, ?

Accepted Answer

1458

Question 7

In a certain code, BRAIN is written as CSBJO. How is TRAIN written in that code?

Accepted Answer

USBJO

Question 8

Which letter is 7th to the left of the 12th letter from the right in the English alphabet?

Accepted Answer

H

Question 9

If BAT = 23 in a code where each letter stands for its position in the alphabet (A = 1, B = 2, …) and the values are added, what is BAG?

Accepted Answer

10

Question 10

Which comes next? HS, LO, PK, TG, ?

Accepted Answer

XC

Question 11

Find the missing number: 27, 64, 125, 216, 343, ?

Accepted Answer

512

Question 12

In a certain code, NIGHT is written as LGEFR. How is PLANT written in that code?

Accepted Answer

NJYLR

Question 13

Which letter is 5th to the right of the 20th letter from the right in the English alphabet?

Accepted Answer

L

Question 14

If BAG = 10 in a code where each letter stands for its position in the alphabet (A = 1, B = 2, …) and the values are added, what is BAT?

Accepted Answer

23

Question 15

Which comes next? D, H, L, P, ?

Accepted Answer

T

Question 16

Find the missing number: 4, 11, 32, 95, 284, ?

Accepted Answer

851

Question 17

In a certain code, FRUIT is written as GSVJU. How is MONEY written in that code?

Accepted Answer

NPOFZ

Question 18

Which letter is 8th to the left of the 18th letter from the left in the English alphabet?

Accepted Answer

J

Question 19

If HEN = 27 in a code where each letter stands for its position in the alphabet (A = 1, B = 2, …) and the values are added, what is DOG?

Accepted Answer

26

Question 20

Which comes next? C, G, K, O, ?

Accepted Answer

S

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