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CBSE Notes 2011-2012 » XI-Maths

Mathematical Reasoning

State whether "OR" used in the following statements is "exclusive" or "inclusive". "A lady gives bir...

Short answer question

State whether "OR" used in the following statements is "exclusive" or "inclusive". "A lady gives birth to a baby boy or a baby girl."

Write the contrapositive of the following statement, "If number is divisible by 9, then it is divisi...

Short answer question

Write the contrapositive of the following statement, "If number is divisible by 9, then it is divisible by 3." '

Write tne converse of the statement, "If a number n is even, then >r is even."

Short answer question

Write tne converse of the statement, "If a number n is even, then >r is even."

Check whether the following statement is true or nor, "If x, y are odd natural numbers, then xy is a...

Short answer question

Check whether the following statement is true or nor, "If x, y are odd natural numbers, then xy is an odd natural number."

Let p be the statement "Mehul is tall" and q be the statement" Mehul is intellegent". Give the verba...

Short answer question

Let p be the statement "Mehul is tall" and q be the statement" Mehul is intellegent". Give the verbal statement for each of the following :
(i) p and q (ii) p or q (iii)~ p (iv) p and ~ q.

Let p be "The sun has set" and let q be "The moon has risen" write the following statements in terms...

Short answer question

Let p be "The sun has set" and let q be "The moon has risen" write the following statements in terms of p and q :
(i) The sun has set and the moon has risen.
(ii) The sun has set but the moon has not risen.
(iii) It is false that moon has risen. (iv) The sun has not set.
(v) The sun has not set and the moon has not risen.

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