Math, asked by naveenkumar008, 1 year ago

find the sum of 7+14+21+.....+490

Answers

Answered by Nobody12345

3

Please mark this as brainliest.

Attachments:

Answered by vijaya2002

2

a=7 ,d=7

490=a+(n-1)d

490=7+7n-7

7n=490

n=70

Sn=n(a1+a70)/2

70(497)/2

=17395

Previous Question

Next Question

Similar questions

History, 7 months ago

When colonists boycotted British goods under the Stamp Act, they...

Hindi, 7 months ago

Vartaman shiksha pranali ka chatro par prabhav elocution competition for class 9...

Science, 7 months ago

which of these do not give wool...

Math, 1 year ago

Show that any positive odd integer is of the form (4m+1) or (4m+3),where m is some integer.

English, 1 year ago

help plzzz fast and important. all...

Math, 1 year ago

At a clearance sale all goods are on sale of 45% discount if the market price of a square is 600 find the selling price...

Physics, 1 year ago

What is the component of 3i^+4j^ alongi^+j^...

English, 1 year ago

1 point All renewable sources of energy are clean...