class 10 maths chapter 1 quiz 5e

#1. The ratio between the LCM and HCF of 5, 15, 20 is:

(d) 12:1

(a) 9 : 1

(b) 4:3

(c) 11:1

#2. Express 98 as a product of its primes

(b) 2² × 7²

(a) 2² × 7

(c) 2 × 7²

(d) 23 × 7

#3. The largest number which divides 60 and 75, leaving remainders 8 and 10 respectively, is

(c) 65

(b) 75

(a) 260

(d) 13

#4. If HCF (16, y) = 8 and LCM (16, y) = 48, then the value of y is

(d) 48

(c) 8

(b) 16

(a) 24

#5. Two natural numbers whose difference is 66 and the least common multiple is 360, are:

(a) 120 and 54

(c) 180 and 114

(b) 90 and 24

(d) 130 and 64

#6. Find the greatest number of 5 digits, that will give us remainder of 5 when divided by 8 and 9 respectively.

(b) 99931

(d) 99951

(c) 99941

(a) 99921

#7. There are 576 boys and 448 girls in a school that are to be divided into equal sections of either boys or girls alone. The total number of sections thus formed are:

(c) 36

(b) 16

(d) 21

(a) 22

#8. There is a circular path around a sports field. Priya takes 18 minutes to drive one round of the field. Harish takes 12 minutes. Suppose they both start at the same point and at the same time and go in the same direction. After how many minutes will they meet ?

(b) 18 minutes

(c) 6 minutes

(d) They will not meet

(a) 36 minutes

#9. HCF of 5^2 x 3^2 and 3^5 x 5^3 is:

(b) 5 x 3^3

(a) 5^3 x 3^5

(d) 5^2 x 3^2

(c) 5^3 x 3^2

#10. The product of two consecutive natural numbers is always:

(b) even number

(c) odd number

(d) even or odd

(a) prime number