The value of $13.7 \times 12.7 \times 0.8$ is ______

Arrange the fractions in decreasing order:

(A) $\frac{4}{5}$

(B) $\frac{7}{8}$

(C) $\frac{3}{7}$

(D) $\frac{5}{9}$

Choose the correct answer from the options given below:

Six bells ring at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. Once, when they start ringing simultaneously for the first time, then determine how many times they will ring together in a continuous span of 30 minutes?

Consider the series:

2, 3, 5, 7, 11, 13, 17, 19, 21, 23, 29

Find the number which is different from other similar numbers.

Simplify $2\frac{3}{4} \div 2\frac{2}{3} \div 1\frac{1}{12} = ?$

The value of $\frac{(2 \cdot 7)^3 - (2 \cdot 2)^3}{(2 \cdot 7)^2 + 2 \cdot 7 \times 2 \cdot 2 + (2 \cdot 2)^2}$ is

Find the greatest number that will divide 38, 88 and 163 so as to leave the same remainder in each case