The sum of 10 terms of the arithmetic series is 390. If the third term of the series is 19. Find the first term :

The number 0.121212 . . . . . in the form $$\frac{p}{q}$$ is equal to -

The HCF and LCM of two numbers are 44 and 264 respectively. If the first number is divided by 2, the quotient is 44. The…

In a farm there are cows and hens. If heads are counted there are 180, if legs are counted there are 420. The number of …

The product of two positive numbers is 11520 and their quotient is $$\frac{9}{5}$$. Find the difference between two numb…

In an examination, a student scores 4 marks for every correct answer and losses 1 mark for every wrong answer. A student…

If a and b are odd numbers, then which of the following is even ?

Two numbers are in the ratio 3 : 4. If their LCM is 240, the smaller of two number is