Question
24.75% of 639.87 + (299.98 ÷ 2.5) = ?2 +
24.18 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.)Solution
ATQ, 24.75% of 639.87 + (299.98 ÷ 2.5) = ?2 + 24.18 25% of 640 + (300 ÷ 2.5) ~ ?2 + 24 ?2 ~ 0.25 × 640 + 120 – 24 ?2 ~ 256 ? ~ 16
If  x4 +  1/(x4) = 194 ,  , then find the value of  1/(x3 ) + x3  ?
...Find the value x2 + y2, if xy = 13 and x + y = 7.
If both the roots of x 2 Â + kx + 49 = 0 are real and equal, then find the value of 'k'.
In â–³ ABC, ∠ A = 90°. M is the midpoint of BC and D is a point on BC such that AD êž± BC. If AB = 7 cm and AC = 24 cm. then AD: AM is equal to:...
If (p + q) = 12 and pq = 32, then find the value of (p² + q²).
- If (a 2  + 1/a 2 ) = 66, then find the value of (a 3  – 1/a 3 ).
A train can cross a pole, a bridge of 720 meter long and platform of 640 meter long in 9 seconds, _____ seconds and 25 seconds, respectively.
The...
In ∆ ABC, MN ‖ BC, the area of quadrilateral MBCN=130 sqcm. If AN : NC = 4 : 5, then the area of ∆ MAN is:
If a + b + c = 12 and ab + bc + ca = 50, then find the value of a2 + b2 + c2.
Relevant for Exams:
