Question

how many terms are there in AP 7,16,25....,349

Answer 1

Answer:

39 is corrected ans. according to formula

An=a+(n-1) d

Answer 2

Step-by-step explanation:

AP 7, 16, 25,............349

• a=7
• d= a2-a1

= 16-7=9

• an=346
• n=?

an = a+(n-1)d

349= 7+(n-1)9

349=7+9n-9

349=9n-2

349+2=9n

351=9n

351/9=n

n=39

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