Question

Find the sum of the: (a) first 50 even numbers​

Answer 1

Answer:

here is you answer

Step-by-step explanation:

(50/2)(2*2 + (50–1)2) = 2550.

so the sum of first 50 even numbers is 2550

Answer 2

S=2+4+6+8...........................+50

a=2,d=4−2=2 and n=50

∴Sn= 2n[2a+(n−1)d]

=50/2[2×2(50-1)×2]

=50[2+49]

=50×51

=2550

:Sum of 50 even numbers is 2550.

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