Challenge Prelims V1.0 – Day 9 – CSAT Paper

1. What is the remainder when 51X27X35X62X75 is divided by 100? (UPSC 2020)

(a) 50

(b) 25

(c) 5

(d) 1

2. An eight digit number 27B47971 leaves a remainder 3 when divided by 4. How many values of B are possible?

(a) 1

(b) 9

(c) 10

(d) 4

3. The numbers from 1 to 19 are written side by side as follows 1234567891011………….171819. If this number is divided by 9, then what is the remainder?

(a) 0

(b) 1

(c) 3

(d) 7

4. When a number N is divided successively by 5 and 9, remainder obtained are 3 and 6 respectively. What is the remainder when N is divided by 15?

(a) 3

(b) 7

(c) 9

(d) 11

5. What is the remainder when + is divided by 8?

(a) 0

(b) 1

(c) 2

(d) 7

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