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How many numbers between 10 and 90 are divisible by 8 completely
  • a)
    12
  • b)
    10
  • c)
    11
  • d)
    8
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
How many numbers between 10 and 90 are divisible by 8 completelya)12b)...
Number between 10 and 90, which are divisible by 8.
First term (a) = 16
Last term (tn) = 88
∴ tn = a + (n – 1)d
88 = 16 + (n – 1)8
72 = (n – 1)8
∴ n = 1 + 9
= 10
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