Question

Number divisible by 2 and 3 bet 1 to 80

Answer 1

number divisible by 2 is 2, 4, 6, 8 , 10......even number.

number divisible by 3 is 3, 6, 9, 12, 15.......odd number.

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Answer 2

Answer:

2×3=6

numbers divisible by 6 b/w 1 to 80

AP= 6 ,12............78

a= 6 , d= 12-6=6 ,an=78 ,n=?

putting the values in the formula

=an=a+(n-1)d

=78=6+(n-1)12

=78-6/12 = n-1

= 72/12 = n - 1

=6 = n-1

=6+1= n

=7=n

Therefore, there are seven terms divisible by 2 and 3.