Question
If p = 25 - q - r and pq + r(p + q) = 256, then find the
value of (p² + q² + r²).Solution
We have, p = 25 - q - r
So, p + q + r = 25
And, pq + r(p + q) = 256
Or, pq + qr + pr = 256
Using, (p + q + r)² = p² + q² + r² + 2(pq + qr + pr)
25² = (p² + q² + r²) + 2 × 256
625 = (p² + q² + r²) + 512
p² + q² + r² = 113
Determine the difference between the compound interest and the simple interest earned by Vinay, given that he lent Rs. 64,000 at ...
12.99% of 499.99 ÷ 13.17 = ? ÷ 20.15
Approximate the value of (19.98 × 5.02) ÷ 0.99
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
? 3 + 95.06 X 39.87 ÷ 5.03 = 1271.89
?% of 399.97 = 11.982 + 16.13 × 4.16 – 35.99
40.93√? + √6625 + √6920 + √? = 205.7542`xx` 7.654
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
5 (1/2)% of 3599.67 + {18.11% of 2499.67} + √255.11 - 10% of 1799.99 - (63.01 – 47.08) = ?
(84.92 + 235.17) ÷ (15.93 × 3.89) = ? ÷ 21.02
