Question
Find the wrong number in the given number series.
2, 3, 5, 7, 11, 13, 17, 20Solution
This is a prime series. All are primes except 20.
Wrong Number = 20
Correct Number = 19
In a college, the proportion of boys to girls is 7:9, and the proportion of graduate students to postgraduate students is 4:5. Determine the total numbe...
when x =4 and y =-6 then find the value of 27x³ +58x²y +31xy² +8y³?
- If (m + n + o) = 16 and (mn + no + om) = 80, then find the value of (m² + n² + o²).
If x + 1/x = 5, find: x² + 1/x²
The roots of the quadratic equation x² + px + q = 0 are in the ratio 3:4. If the sum and product of the roots are 7 and 12, respectively, find the valu...
If x/y = 5/3, Find (x+y)/(x-y)?
Find ‘x’ if (x³+3x)/(3x²+1) = 189/61
If x – 1/x = 9, then x3 – 1/x3 is:
If p = 33 - q - r and pq + r(q + p) = 260, then find the value of (p² + q² + r²).