Question

1.) How many terms of the sequence 18, 16, 14... must be taken so that their sum is 636?
2.) How many terms are there in the A.P. whose first and fifth terms are -14 and 2 respectively and the sum of the terms is 40?
3.) How many terms of the A.P. 9, 17, 25... must be taken so that their sum is 636?
4.) How many terms of the A.P. 63, 60, 57... must be taken so that their sum is 693?
5.) How many terms of the A.P. 27, 24, 21... should be taken so that their sum is zero?

log10 42

২৮ মিটার দৈঘ্য এবং  ২৫ মিটার প: বিশিষ্ট একটি জলাধারের  চারিদিকে ৫মিটার চওড়া একটি পথ আছে পথ সহ জলধারের খেএফল কত?

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Why we take common in this exercise

Physics 

in the image that i have posted, while solving here in the image when they put the value of h=0 in LHL limit shuldn't the result will be equal to -0, and here zero is not exact zero.

In a quadrilateral ABCD, the bisector of angle C and angle D intersect at O Prove that angle COD=1/2(angleA angleB

If Gpr ratio is not same comparing to previous period ..what to do and how to make adjustments?

यदि y=UNDERRUT X +1UPON UNDER RUT X TAB PROVE THAT 2XDYUPONDX+Y-2UNDERRUTX=0

What is homogeneous

O,□,□,-12

What us formula and how is derived

What is 2k-3 6