Question

for AP 3,5,7,9....... , t20=?? a) 38 b) 41 c) 440 d) 44​

Answer 1

Answer:

t20=41........ b) is correct.

Step-by-step explanation:

given...

a=3, d=2, t20=?, n=20

we have,

tn=a+(n-1)d

t20=3+(20-1)2

t20=3+(19)2

t20=3+38

t20=41

Answer 2

Answer:

As we solve an AP the first term will be the value of a and 2nd term - 1st term will be the value of d

here,

a= 3, d=5-3=2,n=20

so,

AP= a+(n-1)d

3+(20-1)2

3+38

41 will be the answer

hope i have helped you....