Grade 1110 grade maths

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

12 Years agoGrade 11

3 Answers

Sher Mohammad

12 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

11 Years ago

Hi sher mohamed,

Please explain the answer in brief.

lokesh

Vaishali Gaur

8 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.