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In a certain ap the 24th term is twice the 10 th term provw that the 72 th term is twice the34th term

Posted by Anubav Shaw 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Divya Garg 6 years, 10 months ago

a+23d=2 (a+9d)....... a+23d=2a+18d....... 23d-18d=2a-a...... 5d=a....therefore a+71d=2 (a+33d).... a+71d=2a+66d..... 5d+71d=2 (5d)+66d..... 76d=10d+66d....76d=76d........ Hence proved....?

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CBSE > Class 10 > Mathematics