Question

what is the sum of even numbers greater than 10 and less than 100 ?​

Answer 1

Step-by-step explanation:

12+14+16+-------------+98

a=12

d=2

Last term= 98

tn= a+(n-1)d

98= 12+(n-1)2

98-12= (n-1)2

86= (n-1)2

43= n-1

44=n

sum of n term = n/2(a+l)

= 44/2(12+98)

= 22×110

= 2420

#666

Answer 2

Answer:

The answer is 2420

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