List of top Mathematics Questions on Number System asked in Bihar Board X

The number of common tangents of two intersecting circles is:
The product of two numbers is \(8670\) and their HCF is \(17\). What is their LCM?
Which of the following is a rational number?
If \(130 = 15 \times 8 + 10\) and \(15 = 5 \times 3 + 0\), then \(\mathrm{HCF}(130,\,15)\) will be:
What is the exponent of \(2\) in the prime factorization of \(192\)?
If in the division algorithm \(a=bq+r\), \(a=72\), \(q=8\) and \(r=0\), then what is the value of \(b\)?
Which of the following has a terminating decimal expansion?
If \(q\) is a positive integer, which of the following is {not an odd positive integer?}
The HCF of two consecutive even numbers is:
The sum of a rational number and an irrational number is which type of number?
\(\dfrac{\sqrt{81}}{2}\) is: