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A’s position from the front = 12 Number of boys between A and B = 5 ∴ B’s position from the front = 6 Position of B from the back = 9 Total number of boys = (9 + 6) – 1 = 15 – 1 = 14 Hence, 14 boys are in the row.
A boat covers a distance of 75 km downstream in 2.5 hours. If the ratio of upstream speed to downstream speed of the boat is 3:5, then find the distance...
If x + 1/x = 5 then find out the value of x⁵ + 1/(x⁵)?
If (Ax + By - Cz) 2 = 4x 2 + 3y 2 + 2z 2 + 4√3xy - 2√6yz - 4√2xz, then find the value of A
Simplify the following expression: (8x - 6y - 5z) 2
If P3 + 3P2 + 3P = 7, then the value of P2+ 2P is –
The mean age of 30 students was calculated as 15 years. However, it was later discovered that one student's age was mistakenly entered as 15 years inste...
The coefficient of ‘b2’ in (3a + b)3 is
The area of △ ABC is 44 cm2 . If D is the midpoint of BC and E is the midpoint of AB, then the area of △ BDE is
If, 4x2 + y2 + 12x + 6y + 18 = 0, then find the value of (2x + y)/(y + 6x).
If (a + b)2 = 18 + c2, (b + c)2 = 22 + a2 and (c + a)2 = 24 + b2, then find the va...