Answer:
= sn=n/2 (2a+(n-1)d
= 10/2 (2×2+(10-2)5
= 5×49
= 245
Step-by-step explanation:
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Answer:
= sn=n/2 (2a+(n-1)d
= 10/2 (2×2+(10-2)5
= 5×49
= 245
Step-by-step explanation:
plz mark me as brainliest