For the following questions answer them individually
For real a, b and c if $$a^2Â + b^2 + c^2$$ = ab + bc + ca, then find the value of $$(a + b + c)^2$$
An Assertion (A) and a Reason (R) are given below.
Assertion (A): Earthworms are not good for agriculture.
Reason (R): Earthworms break down the soil into fine particles and make it soft.
Choose the correct option.
Based on the analogy given, find the missing number from the given options.
7528 : 5362 : : 4673: ?
If 'P' means 'divided by', 'T' means 'add' 'M' means 'subtract' and 'D' means 'multiplied by', then what will be the value of the following expression?
12 M 12 D 28 P 7 T 15
