Advertisements
Advertisements
Question
(–157) × (–19) + 157 = ______.
Advertisements
Solution
(–157) × (–19) + 157 = 3140.
Explanation:
(–157) × (–19) + 157
= 157 × 19 + 157 × 1
= 157 × [19 + 1]
= 157 × 20
= 3140
APPEARS IN
RELATED QUESTIONS
Find the product, using suitable properties:
26 × (− 48) + (− 48) × (− 36)
Find the product, using suitable properties:
(− 41) × 102
Find the product, using suitable properties:
625 × (− 35) + (− 625) × 65
Find the product, using suitable properties:
7 × (50 − 2)
Find the product, using suitable properties:
(− 17) × (− 29)
Find the following products: (– 18) × (– 10) × 9
Find (– 23) × 48
In a test, +3 marks are given for every correct answer and –1 mark are given for every incorrect answer. Sona attempted all the questions and scored +20 marks though she got 10 correct answers.
- How many incorrect answers has she attempted?
- How many questions were given in the test?
In a true-false test containing 50 questions, a student is to be awarded 2 marks for every correct answer and –2 for every incorrect answer and 0 for not supplying any answer. If Yash secured 94 marks in a test, what are the possibilities of his marking correct or wrong answer?
A multistorey building has 25 floors above the ground level each of height 5 m. It also has 3 floors in the basement each of height 5 m. A lift in building moves at a rate of 1 m/s. If a man starts from 50 m above the ground, how long will it take him to reach at 2nd floor of basement?
