Mental Math Challenge
| Mental Math Challenge without Paper & Pen: Learn How to Answer the Below Questions in less than 5 Seconds each. | ||||||||
| 1 | Prime Numbers Between 1 to 100: 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53, 59,61,67,71, 73, 79, 83, 89, 97 | |||||||
| 2 | 17 * 14 | 16 * 19 | 86 * 99 | Cube Root of a Big Number | ||||
| 3 | 26 * 24 | 112 * 103 | 512 * 11 | 3√1728 | ||||
| 4 | 38 * 32 | 47 * 43 | 834 * 11 | 3√4913 | ||||
| 5 | 87 * 83 | 84 * 86 | 47 * 67 | 3√6859 | ||||
| 6 | 75 * 75 | 73 * 33 | 93 * 97 | 3√29791 | ||||
| 7 | 99 * 86 | 93 * 99 | 68 * 62 | 3√13824 | ||||
| 8 | 77 * 73 | 79 * 99 | 28 * 99 | 3√10648 | ||||
| 9 | 99 * 34 | 185 * 185 | 89 * 29 | 3√46656 | ||||
| 10 | 34 * 74 | 143 * 147 | 81 * 89 | 3√35937 | ||||
| 11 | 72 * 78 | 57 * 99 | 97^2 | 3√39304 | ||||
| 12 | 83 * 99 | 198 * 192 | 128 *25 | 3√59319 | ||||
| 13 | 232 * 11 | 135 * 135 | 86 * 84 | 3√85184 | ||||
| 14 | 122 * 122 | 202 * 208 | 56 * 125 | 3√132651 | ||||
| 15 | 3426 * 11 | 8842 / 5 | 328 * 125 | 3√175616 | ||||
| 16 | 145 * 145 | 36784 / 5 | 109 * 109 | 3√274625 | ||||
| 17 | 107 * 104 | 94262 / 5 | 127 * 123 | 3√531441 | ||||
| 18 | 8246 * 5 | 84362 *11 | 116 * 114 | 3√592704 | ||||
| 19 | 4832 * 25 | 628496 * 5 | 195 ^2 | 3√405224 | ||||
| 20 | 32168 * 125 | 264642 / 5 | 245 ^2 | 3√778688 | ||||
Vinod Kumar Msc Mphill, 20 years of Experience as a GMAT GRE PSAT SAT & ACT Math Tutor in Charlotte NC USA. Improvement Guaranteed within 30 to 60 Days.
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