For the following questions answer them individually
In the following series, one number is missing as shown by the question mark (?). Select the missing number from the given options.
3, 8, 13, 18, ?
Consider the following statement and select the best option.
Gold is more expensive than silver.
If $$x^2 + kx + k = 0$$ has two distinct real solutions, then the value of k will satisfy:
A number was divided in the ratio 3 : 2. When 8 was added to each of the numbers the
ratio changed to 7: 5. The greater of the two numbers was: