Winnie wrote the following riddle : I am a number between 60 and 100. My ones digit is two less than my tens digit. I am a prime
1 answer:
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Answer:
it seems like the first term is -64, so lets write the formula accordingly:
a_n = a1(r)^(n-1)
where 'n' is the number of terms
a1 is the first term of the sequence
'r' is the ratio
the ratio is because -64 *
= 16 and so on...
the explicit formula is :
=