Question
If a nine-digit number 89563x87y is divisible by 72,
then the value of √ (8x -6y) will be ∶Solution
Nine-digit number 89563x87y is divisible by 72, so the number is also divisible by 8 and 9. Divisibility law of 8 ⇒ A number divisible by 8 if its last three digits are divisible by 8. Divisibility law of 9 ⇒ A number is divisible by 9 if the sum of its digits is divisible by 9. 87y divisible by 8 if y = 2 Nine-digit number 89563x872 is divisible by 9 if the sum of its digits is divisible by 9. = 8+9+5+6+3+x+8+7+2 =48+x So, putting the value of x= 6 Now -√ (8x -6y) = √ (8×6 – 6×2) = √ 36 = 6
What will come in the place of question mark (?) in the given expression?
√(? - 212) - 84 = 81 - 13 X 9
Evaluate: 18 ÷ 3 × 4 + 6 − 5
7(1/2) – 3(5/6) = ? − 2(7/12)
`2(1/3)` + `4(1/4)` + `4(2/3)` + `8(7/6)` + ? = `4(3/5)xx4(1/2)`
...89 ÷ 512 × (1/64) = (23)?
What should come in place of the question mark (?) in the following question?
2 – [6 – {3 + (–4 + 5 + 1) × 8} + 12] = ?
The value of 15 × 14 – 30 + (32 + 17) is:
1440 ÷ 12 + 540 ÷ √36 + ? = 180 * 3
[(15)³ × (8)²] ÷ (90 × 6) = ?²
What will come in place of the question mark (?) in the following question?
24.30% of 372.32 = ?
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