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For what value of n, are …

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For what value of n, are the nh terms of two AP's 63, 65, 67,.. and 3, 10, 17,... equal
  • 3 answers

Navkaran Singh 3 years, 7 months ago

Good

Ayushi Gupta 3 years, 7 months ago

For AP^1 :- a = 63 d = 2 For AP^2 :- a = 3 d = 7 63 + (n-1) 2 = 3 + (n-1) 7 63 + 2n - 2 = 3 + 7n - 7 61 + 2n = -4 + 7n 61 + 4 = 7n - 2n 5n = 65 n = 13

Nisarga Nisarga 3 years, 7 months ago

AP¹:63,65,67 a=63 d=65-63=2 AP²:3,10,17 a=3 d=10-3=7 Given, An=An a+(n-1)d=a+(n-1)d 63+(n-1)2=3+(n-1)7 63+2n-2=3+7n-7 61+2n=7n-4 61+4=7n-2n 65=5n n=13
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