Math, asked by preetshergill9973, 1 year ago

If 24th term of an ap is twice its 10th term . Show that 72nd term is four times of its 15th term .

Answers

Answered by Anonymous
4

a + 23d = 2(a + 9d)
by \: solving
a = 5d
then \:  \: a + 71d = 4(a + 14d)
3a = 15d
a = 5d
hence proved....
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