A man is 3 years older than his wife and four times as old as his son. If the son becomes 15 years old after 3 years. Then what is the present age of the wife?
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If x2+y2+z2-8x+6y-4z+29 = 0, then find the value of z(x+y).
Find the circumference (in cm) of a circle of radius 10.5 cm
If 16% of an electricity bill is deducted, Rs 1806 is still to be paid. How much was the bill?
What is the value of Sin 30° + 2 Cos 30° ?
If sinA + sin2A = 1 then what is the value of cos2A + cos4A ?
If 4(2x - 4) - 2 > 3x - 1 ≥ 4x - 7, then x can take which of the following values?
After allowing a discount of 20% on Marked price Kishore makes a profit of 12%. What percentage is the Marked price above the Cost price?
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