Question

e How many even numbers are there between 1 and 20 (both inclusive)?​

Answer 1

Answer:

10

Step-by-step explanation:

they are 2,4,6,8,10,12,14,16,18,20

Answer 2

Answer:

10 even numbers

Step-by-step explanation:

This question can be solved using the concept of Arithmetic Progression (AP)

here a=2

d=2

an=20

using the formula, an=a+(n-1)d

20=2+(n-1)2

18=(n-1)2

9=n-1

n=10

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