Question : Directions: In the following number series, two numbers have been put within brackets. Select the most appropriate option for these numbers in relation to their inclusion in the series.
21, 24, 19, (29), 17, 28, (15), 30

Question : Directions: Select the option that is correct for the bracketed numbers with respect to their inclusion in the given series.
4, 11, 30, (67), 128, 219, (346), 515

Question : Directions: Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
121 : 145 : : 49 : 65 : : 169 : ?

Question : Identify whether the given statements about ionisation energy are correct or incorrect.

Statement A: The ionisation energy of an atom is the amount of energy that is required to remove an electron from a mole of atoms in the gas

Question : Directions: In the following question a series is given, with one number missing. Select the missing number from the given series.
3, 10, 31, 94, ?