The sum of first 7 terms of an A.P. is 10 and that of next 7
terms is 17. Find the progression.
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Answer:
a=4,,,d=1..AP=4,5,6
Step-by-step explanation:
a7 = 10
a+6d=10.......i
also a14=17
a+13d=17........ii
subtracting i from ii
a+13d=17
-a-6d=-10
7d=7
d=7/7
d=1
put d=1 in i
a+6(1)=10
a=10-6
a=4
a2=a+d=5
a3=a+2d=6
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