10 grade maths> An 8-digit no. is a multiple of 73 and 13...

An 8-digit no. is a multiple of 73 and 137. If the second digit from left is 7 then 6th digit from left of the n. is ?

Pallavi Das , 11 Years ago

Grade 11

3 Answers

Sher Mohammad

Last Activity: 11 Years ago

73*137=10001, whenever it will be multiplied by any digit number , will give 8 digit number, let 3 digit number is pqrs

10001*pqr=pqrs*0000+pqrs=pqrs0pqrs, see second and 6 digit is same, so 6th digit will be 7.

sher mohammad

b.tech, iit delhi

lokesh niranjan

Last Activity: 11 Years ago

Hi sher mohamed,

Please explain the answer in brief.

lokesh

Vaishali Gaur

Last Activity: 7 Years ago

73 and 137 are prime number.73×137=10001When we multiply 10001 by (1700 to 1799)We get 8 digit number as 10001×1700=1700170010001×1701=17011701 etc.These all digit numbers are multiples of 73 and 137 Second digit from right is 7Hence,sixth from the left is 7.