Question
Car ‘M’ can cross a 480 metre long bridge in 16
seconds. Car ‘M’ is 128 metres ahead of car ‘N’ which is travelling in the same direction as that of car ‘M’ with a speed of 38 m/s. After how many seconds will car ‘N’ meet car ‘M’?Solution
Speed of car ‘M’ = 480 ÷ 16 = 30 m/s So, relative speed of car ‘N’ with respect to car ‘M’ = 38 – 30 = 8 m/s Distance between the two cars = 128 metres So, time taken by car ‘N’ to meet car ‘M’ = 128 ÷ 8 = 16 seconds
If '-' means '÷', '+' means ' X ', '÷' means '-' and ' X ' means '+', then what is the value of the following expression?
540 - 18 + 2 X 56 ...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
28 * 174 * 6 * 4 * 126 = 18
If '+' means 'divided by', '-' means 'add', ' X ' means 'minus' and '÷' means 'multiplied by'. What will be the value of the following expression?
...Which among the given operators should replace the “%” (in the same order) in the given expression below:
6 % 11 % 6 % 37 % 30 % 7
After interchanging "×" and "÷", "7" and "4", which of the following equations becomes correct?
If '+' means 'x', '-' means '÷', 'x' means '+' and '÷' means '-', what will come in place of the question mark (?)?
12 + ? - 6 x 20 ÷ 5 = 55
If 14 (16) 8 and 28 (20) 5, then what is the value of A in 63 (A) 4?
Statements:
V ≤ P < S = B; T < U ≤ I = B; N < J < T
Conclusions:
I. J > P
II. N < S
Select the correct combination of mathematical signs that can sequentially replace the ‘*’ signs and balance the given equation.
12 * 8 * 42 ...
If ‘P’ means (÷), ‘Q’ means (×), ‘R’ means (+), and ‘S’ means (-), then what is the value of the expression: 840 P 14 R 32 Q 8 S 99 R ...
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