If a $ b = 2, where a $ b = a² - b, what is the value of a and b?

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statement(s).

Statements:

Some metals are iron.

Some iron are steel.

Conclusions:

(l) Some metals are steel.

(Il) All steel are iron.

Seven people A, B, C, D, E, F and G are sitting around a circular table, facing the centre (but not necessarily in the same order). G is sitting second to the right of B. Only two people are sitting between E and C when counted from the left of E. G is an immediate neighbour of E. A is sitting second to the left of C. D is not an immediate neighbour of B. What is the position of F with respect to G?

ചുവപ്പ് = 12, നീല = 20, വയലറ്റ് = 42. മജന്തയുടെ കോഡ് എന്താണ് ?

If'+'means '- ','-' means '' $\div$ ',' $\div$ ' means ' $\times$ ' and ' $\times$ ' means '+', what will come in place of the question mark (?) in the following question?

$25\times{35}-5+7+2=?$