Telangana SCERT Solution Class IX (9) Math Chapter 15 Proofs in Mathematics Exercise 15.2
1.)
(i) Based on the two statements we can conclude that – Jeevan is mortal.
(ii) No, x could be from any other state of India other than Andhra Pradesh and Telangana.
(iii) Based on the two statements we can conclude that Guly has a red tongue
(iv) All smart people are not presidents. There are a lot of smart people in different – fields or different line of work all of them need not be presidents.
2.)
Given,
3 |
3 | U |
8 |
“If a cord has consonant on one side. There is a odd number on the other side”.
Clearly, we have to check B & 8.
If B has an even number on the other sides or if 8 has consonant – on the other side then the rule is broken.
3.) From the given clues we can conclude that the answer is 35.
(a) Statement – a does not help because the number clearly has more than one digit.
(b) Statement – b doesn’t help because the only multiply 7
7 is 70, which is divided by 10.
(c) Statement – c help because it opts out lots of number that are not multiple of 7.
(d) Helps because being odd number a lot of number.
(e) Statement – e does not help because the multiple of 7 and 11 is 77 and both the digits are not equal.
(f) Statement – f does not help.
(g) Statement – g for the opts out some possibilities.
(h) Using statement h we can conclude that 35 is the answers so it obviously helps.
Therefore, only c, d, g & h can be used to get the number rest are not required.