Quantitative Aptitude - Arithmetic Ability Questions

If x, y, z are the three factors of a3 -7a - 6, then value of x+y+z will be

Two numbers are in the ratio 2:5 and their HCF is 18. Their LCM is

If sinA + sin2A = 1 then what is the value of cos2A + cos4A ?

A merchant marks the price of his articles 30% above the cost price. He gives some discount on it and earns a profit of 13.75%. What is the discount percentage?

If two flood gates A and B function simultaneously, the reservoir will be filled iu 6 hours. Gate A fills the reservoir 5 hours faster than gate B. How many hours does the faster flood gate take to fill the reservoir?

The value of 3x9n+1+9x32n-19x32n-6x9n-1 is equal to

ΔABC is similar to ΔPQR. If ratio of perimeter of ΔABC : perimeter of ΔPQR is 5:9 and if PQ = 45 cm, then the length of AB (in cm) is?

What is the value of 10% of 150% of 400?