Mathematics · Sequences and Series
The common difference of the A.P. (a1, a2, ..., an) is 2 more than the common difference of the A.P. (b1, b2, ..., bn). If a40 = −159 and b100 = −70, and a70 = b70, then a1 is equal to:
- 1127
- 2−81✓
- 3−127
- 481
Correct answer
−81
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