List of practice Questions

What is the least square number exactly divisible by 4, 5, 6, 12, 15, 18 and 36 ?
Three cubes of iron, whose sides are 6cm, 8cm and 10cm respectively, are melted and formed into a single cube. The edge of the new cube formed is
A single discount equivalent to two successive discounts of\(18\%\)and\(20\%\)is
If Narendra goes to his office on cycle at a speed of 10 Kmph, he reaches the office late by 5 minutes. If he goes at a speed of 12Kmph, he reaches office 10 minutes before time. The distance between office and his home is
If\(35 \$9 - 1865 = 1 \times 24\), which of the following digits will replace\(\$\)?
Which of the following is in descending order?
What will be the difference between the simple interest and compound interest accrued on an amount of Rs.19,200/- at the end of 3 years @ 12 p.c.p.a?
A 240 metre long train crosses a platform in 20 seconds. What is the speed of the train ?
The number obtained after interchanging the two digits of a two digit number is greater than the original number by 9. If the sum of the two digits of the number is 13, what is the original number?
The average of the ages of a man and his daughter is 34. If the respective ratio of their ages four years from now is\(14 : 5\), what is the daughter’s present age?
Two trains of lengths 80m and 120m respectively are travelling in the same direction. If the first train travelling a speed of 80 Kmph crosses the second train in 24 seconds, then the speed of the second train is :
The ratio in the ages of Priyanka and Sweta, one year ago, was\(4 : 5\)and after 1 year it will be\(5 : 6.\)What is the present age of Sweta ?
In the following number series, a wrong number is given. Find out the wrong number.
508 , 252 ,124 , 60 , 28 ,14 , 4
What approximate value should come in place of the question mark (?) in the following questions? (Note: You are not expected to calculate the exact value.)
\((18.6)\)3=?
What approximate value should come in place of the question mark (?) in the following questions? (Note: You are not expected to calculate the exact value.)
\(\frac{2225}{7}\times\frac{867}{5}\times\frac{119}{4}=?\)
In how many different ways can the letters of the word ‘CREAM’ be arranged?
What approximate value should come in place of the question mark (?) in the following questions? (Note: You are not expected to calculate the exact value.)
\(9876.5 \div18.5 \div3.2 =?\)
What approximate value should come in place of the question mark (?) in the following questions? (Note: You are not expected to calculate the exact value.)
\(\sqrt{1850}=?\)
What approximate value should come in place of the question mark (?) in the following questions? (Note: You are not expected to calculate the exact value.)
\(17.998\times23.005\times11.99 =?\)
If t$_5$, t$_{10}$ and t$_{25}$ are 5$^{th}$, 10$^{th}$, and 25$^{th}$ terms of an A.P. respectively, then the value of $\begin{vmatrix}t_{5}&t_{10}&t_{25}\\ 5&10&25\\ 1&1&1\end{vmatrix}$ is equal to
A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will
There are two radioactive substances A and B. Decay constant of B is two times that of A. Initially, both have equal number of nuclei. After n half lives of A, rate of disintegration of both are equal. The value of n is

The rate constant for the decomposition of hydrocarbons is 2.418 x 10-5 s-1 at 546 K. If the energy of activation is 179.9 kJ/mol, what will be the value of pre-exponential factor.

Two pulley arrangements (A) and (B) are as shown in the figure. Neglect the masses of the ropes and pulleys and the friction at the axle of the pulleys. The ratio of the acceleration of mass m in arrangement (A) to that in arrangement (B) is

The bulb in the circuit shown in Fig. does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow.

The bulb in the circuit