Question

please write only correct answer
write the answers step by step​

Answer 1

Answer:

Q1:

we can able to see that the numbers 1,4,9,16 are the square of 1²,2²,3²,4²

Therefore the next three terms are 5²,6²,7²

=>25,36,49

Q2:

A.P=3,7,11,15,..........

A)

a=3

Common difference (d) is (tn+1)-(tn)

=>d=7-3=11-7=4

therefore Common difference (d)=4

B)

tn=a+(n-1)d

t20=3+(20-1)4

t20=3+(19)4

t20=3+76

t20=79

C)

tn=3+(n-1)4

D)

tn=261

=>261=3+(n-1)4

=>261=3+4n-4

=>261=4n-1

transposing -1 to other side

=>261+1=4n

=>n=262/4

=>n=65.5

n does not belongs to Natural number

therefore 261 is not a term in this sequence

Answer 2

ok!!!!!!!!!!!!!!!!!!!!!!!!!✌️