Quantitative Aptitude - Arithmetic Ability Questions

What number, from the following should be deducted from 1184 to make it exactly divisible by 21?

If P = 22 + 62 + 102 + 142 + ... 942 and Q = 12 + 52 + 92 + ... 812, then what is the value of P – Q?

The circumference of a circle is 110 cm. Find its radius (in cm).

If a = √2 + 1 and b = √2 - 1, then the value of 1a+1+1b+1 will be

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

The ratio of two numbers is 6 : 11 and their difference is 65. What will be the smaller number among both the numbers?

If  C+1C = 3, then what is the value of C3+1C3 = ?

In a triangle PQR, ∠PQR = 90 deg, PQ = 10 cm and PR = 26 cm, then what is the value (in cm) of inradius of incircle?