Question
In a village, number of males, female and children are
in the ratio of 3:5:7. If 90% of the males are literate, 80% of females are literate and 40% of children are illiterate, find the number of illiterate persons in the village.Solution
Since, total number of persons in the village is not given, we cannot calculate the number of illiterate persons in the village.
- If (r + s) = 7 and rs = 15, then find the value of (r² + s²).
If (a + b) = 7 and ab = 10, then find the value of (a 2 + b 2 ).
- If x² - 2x + 1 = 0, then find the value of (x² + x⁻²)(x² + x⁻²).
Solve for x:
3x - 4 = 2x + 5
If a + b + c = 6, a³ + b³ + c³-3abc = 342, then what is the value of ab + bc + ca
If √p + (1/√p) = 12, then find the value of p + (1/p).
If (x 2 = 6x – 9), then find the value of [x³ + (x⁴/9)][5 - x³]
A shopkeeper marked his article 25% above its cost price and offered a discount of 30%. If cost price of the article is Rs. 560, then find profit or los...
Find the number of zeroes in 20 × 45 × 32 × 25.
1/3 + 1/15 + 1/35 + 1/63 + 1/99 = ?