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Number System (Properties practice problem - 1) (in Hindi)
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Number System (Properties practice problem - 1) (in Hindi)

Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. More than 20000 students selected.

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(5)
U
Unacademy user
10x+y kaisa Aya ??
Aman chauhan
7 months ago
bro 10x+y is refer to 2 digit number take any value of x and y u always gets a 2 digit number ranging from 11 to 99
Aman chauhan
7 months ago
bro 10x+y is refer to 2 digit number take any value of x and y u always gets a 2 digit number ranging from 11 to 99
SM
147 se kam kyun liya sir ? usse jyada kyun nhi liya ?
147 se chhota kyu liya
Ankit Kumar
a year ago
Because since 1.5*(10x+2) is the required sum after reversing the number and since denominator consists of 2 so being an integer, it should be divisible by 2. So maximum allowed value is 98 thus. 1.5*98=147
sir last question samaj nahi aaya
sir 10 o + o bhi toh ho sakta hai option e kyu nai