What is the number in the place of '?' in the sequence 3, 28, 128, 353, 753, '?'?
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Given 3 , 28, 128 , 353 , 753 , ?
28 - 3 = 25=5²
128 - 28 = 100 = 10²
353 - 128 = 225 = 15²
753 - 353 = 400 = 20²
so, consecutive difference with next term = 25²
let number in the place of ? is X
then, X -753 = 25²
=> X - 753 = 625
=> X = 753 + 625 = 1378
28 - 3 = 25=5²
128 - 28 = 100 = 10²
353 - 128 = 225 = 15²
753 - 353 = 400 = 20²
so, consecutive difference with next term = 25²
let number in the place of ? is X
then, X -753 = 25²
=> X - 753 = 625
=> X = 753 + 625 = 1378
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