Pls anyone help me ans this ques. plsss and plss explain how did u get that ans
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well The equation says subtract sum of whole nos. .............(as u can read) . now looking carefully....let us open the brackets.....we get _ -1....-2....-3....-4..........
subtracting 1 from 31.....2 from 32.....3 from 33....4 from 34.........n so on.......we get 30; 30 times....so the answer is 30 X 30.....=900 so ans . is B..
subtracting 1 from 31.....2 from 32.....3 from 33....4 from 34.........n so on.......we get 30; 30 times....so the answer is 30 X 30.....=900 so ans . is B..
shayan61:
I understood why we r getting 30
But why did u multiply with 30 again
Can u explain that part pls
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answer will be 900 try this sum by arithmetic progression or else u won't understand what I did
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