Quantitative Aptitude - Arithmetic Ability Questions

If P + 1P+2 = 1, then the value of P+23+1P+23-3 ?

The HCF of 24, 60 and 90 is:

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?

Coefficient of x2 in (x + 7)(5 - 3x)(3x - 6) is

The income of P, Q and R are in the ratio of 5 : 4 : 3 respectively and their expenses are in the ratio of 6 : 5 : 4 respectively. If P saves Rs 4000 out of an income of Rs 10000, then what will be the saving (in Rs) of Q?

A work can be completed by 18 boys in 24 days. If 6 boys leave after working for 12 days, then how many days will be needed to complete the remaining work?

If a - b = 3 and a2+b2=25, then the value of ab is

Which of the following is correct?