Question

How many multiples of 3 or 7 are between 23 and 500

Answer 1

Answer:

For 3: 159

For 7 : 68

Step-by-step explanation:

Multiple of 3:

First term(a) = 24

Last term(l) = 498

Difference(d) = 3

a (n) = a+(n-1)d.........(i)

498 = 24 + (n-1)*3

Therefore, n = 159 (ans)

Multiple of 7:

a= 28

l= 497

d= 7

Putting in formula (i)

497= 28+(n-1)*7

Therefore, n= 68 (ans)