Assertion (A): In Hindu Arabic system of numeration 9365217 = Ninety three lakh sixty five thousand two hundred and seventeen.
Reason (R): In Hindu Arabic system counting from right hand side towards left first three digits form one's period, next two digits form thousand's period and next two digits form lakh's period.
∴ 9365217 = 93,65,217
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.
Answer
Assertion (A) : In the Hindu-Arabic (Indian) system, 9365217 = 93,65,217, which is read as ninety three lakh sixty five thousand two hundred seventeen. This agrees with the assertion, so A is true.
Reason (R) : In the Hindu-Arabic system, counting from the right hand side, the first three digits form the one's period (ones, tens and hundreds), the next two digits form the thousand's period (thousands and ten thousands) and the next two digits form the lakh's period (lakhs and ten lakhs). This is correct, so R is true.
So, both A and R are true.
Hence, option 3 is the correct option.
Assertion (A): In International system of numeration 638452179 = Six hundred thirty eight million four hundred fifty two thousand one hundred seventy nine.
Reason (R): In International system of numeration counting from right hand side towards left first three digits form one's period, next three digits form thousand's period and next three digits form million's period.
∴ 638452179 = 638,452,179
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.
Answer
Assertion (A) : In the International system, 638452179 = 638,452,179, which is read as six hundred thirty eight million four hundred fifty two thousand one hundred seventy nine. This agrees with the assertion, so A is true.
Reason (R) : In the International system, counting from the right hand side, the first three digits form the one's period (ones, tens and hundreds), the next three digits form the thousand's period (thousands, ten thousands and hundred thousands) and the next three digits form the million's period (millions, ten millions and hundred millions). This is correct, so R is true.
So, both A and R are true.
Hence, option 3 is the correct option.