Question

Optional)
ہوا
^ f78-4
115 cm
(^2+72-
1. Which term of the AP 121. 117, 113.is
its first negative term
(Hint: Find for a <0
2. The sum of the third and the seventh terms
of an AP is 6 and their products & Find
the sum of first sixteen terms of the AP
3. A ladder has rungs 25 cm apart
(see Fig. 5.7). The rungs decrease
uniformly in length from 45 cm at the
bottom to 25 cm at the top. Ir the top and
A.B.AL
9 in the
200 logs
the bottom rungs are 2 m apart what is
the length of the wood required for the
23 cm
250
Hint : Number of rung
Fig. 5.7​

Answer 1

Answer:

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