Bu Q. 2. How many two digits numbers are divisible by 3 ?
Al [CBSE Delhi Set-I, 2019]
Answers
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Step-by-step explanation:
3,..,99
tn = a + ( n - 1 )d
99 = 3 + ( n - 1 ) 3
99 - 3 = 3n - 3
99 = 3n
n = 99 / 3
n = 33
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