Question

for the AP 4 ,9 ,14 ,19 the value of a 30 - a 10is​

Answer 1

Step-by-step explanation:

a1=4 d=5

a10=a+(n-1)d

=4+9*5

=4+45=49

a30=a+(n-1)d

=4+29*5=4+145=149

a30-a10=149-49=100