3) How many two digit number are divisible by 4?
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Step-by-step explanation:
It forms an A.P.
a = 12
d = 4
l = 96
Tn = a + (n-1)d
96 = 12 +(n-1)4
84 = (n-1)4
84/4 = n-1
21 + 1 = n
n = 22
Therefore there are 22 two-digit numbers divisible by 2.
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