the 21st term of Ap whose first two term are - 1 and 2 are?
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The 21st term of an AP is 137. Step-by-step explanation: It is given that first two term are -3 and 4. Therefore the 21st term of an AP is 137.
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answer is
a = -1
a+d = 2
so a+ 20d = 59
if my answer is right please mark me as brainlist
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