Math, asked by Manishkumar51014, 1 year ago

यदि 5, 10, 15, R, 20, 35 और 40 का
समान्तर माध्य 21 हो, तो R का मान होगा

Answers

Answered by sanju659

7

Step-by-step explanation:

the answer is 22....

i think its right

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