Question

The value of 9 + 11 + 13 + 15 +...................+ 35 is equal to

1) 324
2) 361
3) 341
4) 308​

Answer 1

Answer:

361 is the answer hope it will help u and mark as brainlist

Answer 2

$\huge\red{SolUTIoN}$

$11 + 13 + 15 + .......... + 35$

Adding and subtracting

1 + 3 + 5 + 7 + 9, we get

[tex](1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + .......... 35) –

(1 + 3 + 5 + 7 + 9)[/tex]

As we know that sum of n odd natural numbers is

equal to [tex]n ^2[/tex]

$(18)^2 – (5)^2$

$= 324 – 25$

$= 299$

at end add 299+9=>308

$\huge\red{AnsWeR}$

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(OPTION 4 )

308