1) Which of following is even number? a) 1 b) 2 c) 5 d) 7 2) Which of the following is odd number? a) 2 b) 4 c) 5 d) 6 3) Which of the following is not" Twin Primes"? a) (3,5) b) (17,19) c) (11,13) d) (9,11) 4) How many Prime Triplet are ther? a) Only one(Ex3, 5,7) b) Two 5) Which of the following is Prime number? a) 37 b) 39 c) 51 d) 25 6) Which of the following are composite number? a) 29 b) 63 c) 59 d) 61 7) Which of the following is multiple of 6? a) 35 b) 42 c) 25 d) 20 8) How many Twin Primes are there between 1to100? a) 8 b) 7 c) 6 d) 9 9) _____×7=105 a) 13 b) 15 c) 18 d) 12

Class 6 (Ex3.1)

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