Question

plzzz... help me...

a)Write the 6th term of the arithmetic

sequence 1,25,49,73,97,.....


b)How many perfect square terms are there in the arithmetic

sequence 97,73,49,.....?​​​
​

Answer 1

Answer:

a) 121

1+24=25,25+24=49,49+24=73,73+24=121

b) only 3

they are 1=1^ , 25 = 5^ , 49=7^

97,73,49,25,1

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Answer 2

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$\sf a_{n} = a + (n - 1)d$

$\sf \: a_{n} = 1(6 - 1)24$

$\sf \: a_{n} = 1 + 5(24)$

$\sf \: a_{n} = 1 + 120$

$\sf \: a_{n} = 121$

______________________

3 perfect square terms.

49 , 25 , 1 are those 3 terms.