Quantitative Aptitude - Arithmetic Ability Questions

Select the odd number from the given alternatives.

What is the value of z2+1z2 when z = 5+26 ?

If a4 + 1 = [a2 /b2 ] (4b2 – b4 – 1), then what is the value of a4 + b4?

If PA and PB are tangents to the circle with centre O such that ∠APB=50°, then the ∠OAB=

The length of the common chord of two intersecting circles is 12 cm. If the diameters of the circles are 15 cm and 13 cm, then what is the distance (in cm) between their centers?

In a circle, a chord, 5√2 cm long, makes a right angle at the centre. Then the length of the radius of the circle will be

The ratio of present ages of Sheetal and Divya is 6 : 5. After 8 years, their ages will be in the ratio of 22 : 19. What is the present age (in years) of Divya?

In the following question, select the missing number from the given series.
 
1912, 2012, 2133, 2277, 2446, ?