12" .Find the sum "25+28+31+cdots+100" ."

Find the sum: 25+ 28+31+…+100.

Find the sum: 25+28+31+\ dot\ +100 (ii) 18+15 1/2+13+\ dot+\ (-49 1/2)

Find the sum of -68 and 28

Find the sum of -68 and 28

Find the sum: 28/(40)+6/(28)

Find the HCF of 12, 16 and 28.

Find the sum: 25+28+31+.+100 (ii) 18+15(1)/(2)+13++(-49(1)/(2))

Find the sum: i] 28 + 31 + ·········· + 100 ii] 28 + 26 + ·········· + 10 . iii] 3 + 11 + 19 + ......+ +803 .

The largest term common to the sequences 1, 11, 21, 31, cdots to 100 terms and 31, 36, 41, 46, cdots to 100 term is

Find the mean of -12 and 28.