1.Find the smallest no of 4 digit which is divisible by 34?
Answer– Smallest number of 4 digit is 1000.
If we divide 1000 by 34, we will get
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| Find the smallest no of 4 digit which is divisible by 34 |
29 as quotient and 14 as remainder.
So 1000 is not exactly divisible by 34.
If we deduct 14 from 1000
1000-14=986 which is a three digit number but exactly divisible by 34.
If we add 34 to the 986, we will get the next number which will be divisible by 34.
986+34=1020.
Hence 1020 is the smallest number which is exactly divisible by 34.
2. Write the name of five systems of numeration found in the history of mathematics?
Answer- Here is the list of some different number system available in the
History of Mathematics.
- The Mayan Number System
- The Egyptian Number system
- The Greek Number System
- The Babylonian Number System
- The Hindu-Arabic Numeral system
3. The Least Prime number is:
Answer- the Least Prime number is 2.
4. What is a Prime Number?
Answer: – A number other than 1 is said to be prime if its only factors are 1 and the number itself.
5. The unit digit in the product
(654*418*927*453) is
Answer-product of unit digits = 4*8*7*3=672.
Here unit digit is =2 (is the unit digit in the product).
So Answer is 2.
6. Is 229 a prime number or what are the factors of 229?
Answer- Yes 229 is a prime number.
Factors of 229 are 1 and 229 itself.
7. If a and b are two odd numbers, then which of the following is even?
a. a + b
b. ab
c.a+b+1
d.ab+2
Answer is a. The sum of two odd numbers is even so a + b is even.
8. How do you determine if a number is odd or even?
Answer-A number which is not exactly divisible by 2 is an odd number.
And the number which is divisible by 2 is an even number or the number ends with 0,2,4,6,8 as its unit digit is an even number.
9. How many tens is 70?
Answer- 7 tens
7 tens make 70.