Question

how many even numbers do we have in between of 10-20

Answer 1

Answer:

he even numbers between 10 and 20 are :10,12,14,16,18,20

(so there are 4 even numbers between 10 and 20 (without counting the 10 and 20 ))

Answer 2

Answer:

Step-by-step explanation:

10 , 12 , 14 ......20

a = 10 , d = 14 - 12 = 2 , an = 20

an = a + (n-1)d

20 = 10 + (n- 1) 2

20 = 10 + 2n - 2

20 = 8 + 2n

8 + 2n = 20

2n = 20 - 8

2n = 12

n = 12/2

n = 6

therefore 6 even numbers are between 10 and 20