Average scores are 4.3 for food, 3.3 for ambience and 2.8 for service. Applying weights 6:5:4 gives [(4.3 × 6) + (3.3 × 5) + (2.8 × 4)] / 15 = 53.5 / 15 ≈ 3.57. Class 9 Ganita Manjari Part ...
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In (i), the sticks must be equal and their arrangement matters because equal diagonals alone do not guarantee type Q. In (ii), equal sticks arranged in any manner guarantee type Q. Class 9 Maths Ganita Manjari Part 2 All Chapter Solutions
Proposition: If a number is divisible by 3, then the sum of its digits is a multiple of 3. Converse: If the sum of the digits is a multiple of 3, then the number is divisible by 3. Cbse Class 9 ...
The statement holds because 2 and 4 divide 8. However, checking 2 and 4 is not enough for 8; for instance, 12 is divisible by both 2 and 4, but not 8. Class 9 Maths Ganita Manjari Part 2 chapter 9 ...
For (i), n = 11 is prime, but 2¹¹ − 1 = 2047 = 23 × 89 is composite. For (ii), n = 6 is even, but 2⁶ + 1 = 65 = 5 × 13 is composite. Class 9 Maths ...