Question
If a cube of a number is subtracted from (153)², the
number so obtained is 1457, Find the number.Solution
Let the number be x. ATQ- (153)2 – x3 = 1457 23409 – x3 = 1457 x3 = 23409-1457 = 21952  x = √ (21952)  x = √ [2× 2× 2× 2× 2× 2 × 7 × 7 × 7] x = 2 × 2 × 7 = 28
1.2Â Â Â Â Â Â Â 4.2Â Â Â Â Â Â Â Â ? Â Â Â Â Â Â Â Â Â Â Â 18.2Â Â Â Â Â Â Â 33.2 Â Â Â Â Â Â 56.2
...5, 14, 41, 122, 365, 1094, ?
If 2.5 3.5 x 30 124 625
Then, x ² - 1 - 2x = ?
...157, 159, 189, 319, ‘?’, 1 407 , 2749 Â
1335Â Â Â Â Â Â 737Â Â Â Â Â Â Â Â 355Â Â Â Â Â Â Â Â 141Â Â Â Â Â Â Â Â 47Â Â Â Â Â Â Â Â Â Â ?
...8, 9, 15, ?,82.5, 250.50
22 44 176 1078 8448
...3 15 35 63 99 ?
95    216    72    241    ?    270
If   314     306      x      269       394    178    1480
Then, 1/3 x + 2x - x = ?
...
