Math, asked by shafatali94577, 1 month ago

please solve the answer

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Answered by nithishkukutapu

0

Answer:

1st box is 75/2 and second box is 5587.5

third box is 5625

Step-by-step explanation:

this is basic arithmetic operation just multiply and sum it

the second one is

n+n(n-1)d

=n+dn^2-dn

=n(1+dn-d)

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