Question
If the 5-digit number 505xy is divisible by 11 and 21,
then what is the value of (7x – 5y)?Solution
LCM (11, 21) = 231 By taking the largest 5-digit number 50599 and divide it by 231. 50599 = 231(divisor) x 219(Quotient) + 10(rem) 50599 = 50589 + 10 50599-10 = 50589 (completely divisible by 231) 50589 = 505xy (where x = 8, y = 9) Now the value of (7x - 5y), (7x5y) = 7x8-5x9 =56-45 = 11 The value of (7x - 5y) is 11.
What will come in the place of question mark (?) in the given expression?
75% of (√64 × 8 - 16) × ? = 15²
(8.6 × 8.6 + 4.8 × 4.8 + 17.2 × 4.8) ÷ (8.62 – 4.82 ) = ? ÷ 19
6 0 - 20 [8 + 12 {8-8 (20-12)+20}-40] ÷ 16 =?
- What will come in place of the question mark (?) in the following questions?
144÷12+18×2=? 75% of 65% of 7/5 of 2420 = ?
Find the simplified value of the given expression:
1.82 + 2.42 + 1.52 - 1.8 x 2.4 - 2.4 x 1.5 - 1.8 x 1.5
(√ 196 x √ 36 x √ 100) = ?% of 200
72% of 486 – 64% of 261 = ?
35% of 240 – 6 2 = ? 2 – √256
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