Question

what are even natural numbers ...and how many are there between 1 to 350 ​

Answer 1

Answer:

Natural no.s which are divisible by 2 are called even natural numbers

For finding even natural no.s we may follow the trick of Arithmetic Progression

even natural no.s between 1to350 are : 2,4...,350

where first such no. is ,a= 2

common difference is 2

and the nth term is = 350

$tn = a +( n - 1) \times d \\ 350 = 2 + (n - 1) \times 2 \\ 350 = 2 + 2n - 2 \\ 350 = 2n \\ n = 175$

thus there are 175 natural even no.s between 1 to 350