Question

NUMBER SYSTEM 15
MATHEMATICS
143. Number of primes between 1 to 100 is _____.
144. If a number has _____ in ones place, then it is divisible by 10.
145. A number is divisible by 5, if it has _____ or _____ in its ones place.
146. A number is divisible by _____ if it has any of the digits 0, 2, 4, 6, or
8 in its ones place.
147. If the sum of the digits in a number is a _____ of 3, then the number
is divisible by 3.
148. If the difference between the sum of digits at odd places (from the
right) and the sum of digits at even places (from the right) of a
number is either 0 or divisible by _____, then the number is divisible
by 11.
149. The LCM of two or more given numbers is the lowest of their common
_____.
150. The HCF of two or more given numbers is the highest of their common
_____.
151. Given below are two columns – Column I and Column II. Match
each item of Column I with the corresponding item of Column II.
Column I Column II
(i) The difference of two consecutive (a) odd
whole numbers
(ii) The product of two non-zero (b) 0
consecutive whole numbers
(iii) Quotient when zero is divided by (c) 3
another non-zero whole number
(iv) 2 added three times, to the (d) 1
smallest whole number
(v) Smallest odd prime number (e) 6
(f) even
11.4.2018

Answer 1

Answer:

1st blank : 25

2nd Blank: 0

3rd and 4th Blank : 5 or 0

5th Blank : 2

6th Blank : Multiple

7th Blank : 11

8th Blank : Multiple

9th Blank : Factor

10th Blank :  

Step-by-step explanation:

Answer 2

1. 2, 3,5,7, 11,13,17,19,23,29,31,37,41,43,47,53,59,60,61,67,71,79,73,81,83,97.

2. divisible by 2and5

3. last number is 0and5.

4. 2

5. sum of number divisible by 3.

6. yes

7. multiple

8. multiple

sorry, I don't solve the 9th question because I am not able to understand it.