Step-by-step explanation:
sn=n/2 [2a+(n-1) d]
S10=10/2[2×2+(10-1)3]
S10=5(4+9×3)
S10=5(4+27)
S10=5×31
S10=151
The sum of first 10th term is 151
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Step-by-step explanation:
sn=n/2 [2a+(n-1) d]
S10=10/2[2×2+(10-1)3]
S10=5(4+9×3)
S10=5(4+27)
S10=5×31
S10=151
The sum of first 10th term is 151