Question

if for an A. Pd=7,what is the value of t17-t10

Answer 1

$\huge{Solution:-}$


Given

Common Difference, d = 7


t17 - t10

=> a + 16d - a + 9d

put d = 7

=> a + 16 ( 7 ) - a + 9 ( 7 )

=> 112 - 63

=> 49.


Hope it helps!

Answer 2

d=7
t17= a+16×7
t17= a+112_________eqn1
d=7
t10=a+9×7
t10=a+63 _______eqn2
t17+t10=a+112-(a+63)
= a+112-a-63
=112-63
=49
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