Question

1. The number of numbers which are
multiples of both 3 and 5 in the first 100
natural numbers is
2. The HCF of two numbers 14 and 28 is 14.
(2) 9
Entrance
(1) 10
(3) 7
UNV 20191
(4) 6​

Answer 1

Answer:

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Answer 2

Answer:

(1) 6.

(2) 28.

Step-by-step explanation:

(1) LCM of 3 and 5 = 15.

The numbers which are multiples of both 3

and 5 = 15×1, 15×2, 15×3, 15×4, 15×5, 15×6

= 15,30,45,60,75,90

Total numbers = 6

So, 6 is the correct answer.

(2) We know that,

Product of two numbers = HCF × LCM

= 14×28/14 = 28.

So, 28 is the correct answer.