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The least number 5 fights.which exactly divided by 52,56,78,91

Hindi mock test available please

42 :14 :: 56 : ?

Ramesh and Naresh start running on a circular track of length 1920 metres from the same
point simultaneously in the same direction with speed of 40 m/sec and 64 m/sec. After how
much time from the start will they meet for the first time anywhere on the track?

sir please provide this app in hindi please all mocks and everything and select the option to change in Hindi

Some chocolates were distributed among four friends A,B,C,D such that the respective ratio between the number of chocolates received by A and C be 7:9. B got 29 chocolates more than that of C. If ab got 15 chocolates more than that of C, how many chocolates did D recieve

\frac{\sqrt{13+2\sqrt{40}}-\sqrt{13-4\sqrt{10}}}{\sqrt{14-6\sqrt{5}}}=a+b\sqrt{5}

a person who lives by himself

216 64 8 6 4 2 328

(4,133,7)