64 : ? :: 72 : 53

किस विकल्प में सभी शब्द शुद्ध हैं- 

Direction (66-70): What should come in place of the question mark(?) in the following number series?

10    11    13    21    69    ?

The Chairman of the Rajasthan Public Service Commission may be suspended—

In 1923, who started a weekly paper called Rajasthan from Beawar?

With which Marwari language is "Veli Chrisan Rukmani Ri" related?

If the digits within the number ‘1409432381’ are arranged in descending order from left to right then how many digit places will be unchanged?

A number which, when increased by 123% becomes 3345. The number is—