ap expert known difference se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.
2 questions tagged with ap expert known difference.
If \(a_1=57\) and \(a_{25}=a_1+312\), what is \(a_{61}\)?
B. (837)
From (24d=312), (d=13). \(a_{61}=57+60\times13=837\).
The correct answer is B. (837). From (24d=312), (d=13). \(a_{61}=57+60\times13=837\).
(24d=312) से (d=13)। \(a_{61}=57+60\times13=837\)।
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If \(a_1=41\) and \(a_{21}=a_1+220\), what is \(a_{51}\)?
B. (591)
From (20d=220), (d=11). \(a_{51}=41+50\times11=591\).
The correct answer is B. (591). From (20d=220), (d=11). \(a_{51}=41+50\times11=591\).
(20d=220) से (d=11)। \(a_{51}=41+50\times11=591\)।
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