Quantitative Aptitude - Arithmetic Ability Questions

Three electronic devices make a beep after every 48 sec, 72 sec and 108 sec respectively. They beeped together at 10 a.m. The time when they will next make a beep together at the earliest is

The ratio of spirit and water in the two vessels is 5 : 1 and 3 : 7 respectively. In what ratio the liquid of both the vessels should be mixed such that a new mixture containing half spirit and half water is obtained?

If 12x = 192- 112, what is the value of x?

If a2b+c=b2c+a=c2a+b=1 then the value of 21+a+21+b+21+c

If √(sec2A - 1)/secA = x, then the value of x is

What is the value of x3-1x3+8 when 8x-8x-16=0 ?

If a2+b2c2 = b2+c2a2 = c2+a2b2 = 1k k≠0 then k =

If x+1x ≠0 and x3+1x3 = 0, then the value of x+1x4 is :