1. (i) Taking rows 5 + (–1) + (–4) = 5 – 5 = 0 (–5) + (-2) + 7 = –7 + 7 = 0 0 + 3 + (–3) = 3 – 3 = 0 Taking columns 5 + (–5) + 0 = 5 – 5 = 0 (–1) + (–2) + 3 = –3 + 3 = 0 (–4) + 7 + (–3) = 7 – 7 = 0 Taking diagonals 5 + (–2) + (–3) = 5 – 5 = 0 (–4) + (–2) + 0 = –6 This box is not a magic square becauseRead more

    (i) Taking rows 5 + (–1) + (–4) = 5 – 5 = 0
    (–5) + (-2) + 7 = –7 + 7 = 0
    0 + 3 + (–3) = 3 – 3 = 0
    Taking columns 5 + (–5) + 0 = 5 – 5 = 0
    (–1) + (–2) + 3 = –3 + 3 = 0
    (–4) + 7 + (–3) = 7 – 7 = 0
    Taking diagonals 5 + (–2) + (–3) = 5 – 5 = 0
    (–4) + (–2) + 0 = –6
    This box is not a magic square because all the sums are not equal.

    (ii) Taking rows 1 + (–10) + 0 = 1 – 10 = –9
    (–4) + (–3) + (–2) = –7 – 2 = –9
    (–6) + 4 + (–7) = –2 – 7 = –9
    Taking columns 1 + (–4) + (–6) = 1 – 10 = –9
    (–10) + (–3) + 4 = –13 + 4 = –9
    0 + (–2) + (–7) = 0 – 9 = –9
    Taking diagonals 1 + (–3) + (–7) = 1 – 10 = –9
    0 + (–3) + (–6) = –9
    This box is magic square because all the sums are equal.

    7 Maths Chapter 1 Exercise 1.1 Question 7, 8

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-1/

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  2. According to the number line, Rita moves towards east is represented by a positive integer. But she moves in opposite direction means Rita moves west, is represented by negative integer. Distance from A to B = 20 km Distance from B to C = 30 km Distance from A to C = 20 – 30 = –10 km Thus, Rita is aRead more

    According to the number line, Rita moves towards east is represented by a positive integer. But she moves in opposite direction means Rita moves west, is represented by negative integer.
    Distance from A to B = 20 km
    Distance from B to C = 30 km
    Distance from A to C = 20 – 30 = –10 km
    Thus, Rita is at final position from A to C is –10 km.

    7 Maths Chapter 1 Exercise 1.1 Question 2, 3, 4, 5 & 6

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-1/

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  3. Deposit amount = ₹2,000 and Withdrawal amount = ₹1,642 ∴ Balance = 2,000 – 1,642 = ₹358 Thus, the balance in Mohan’s account after withdrawal is ₹ 358. 7 Maths Chapter 1 Exercise 1.1 Question 2, 3, 4, 5 & 6 for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chaRead more

    Deposit amount = ₹2,000 and Withdrawal amount = ₹1,642
    ∴ Balance = 2,000 – 1,642 = ₹358
    Thus, the balance in Mohan’s account after withdrawal is ₹ 358.

    7 Maths Chapter 1 Exercise 1.1 Question 2, 3, 4, 5 & 6

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-1/

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  4. Height of a place above the sea level = 5000 m Floating a submarine below the sea level = 1200 m ∴ The vertical distance between the plane and the submarine = 5000 + 1200 = 6200 m Thus, the vertical distance between the plane and the submarine is 6200 m. 7 Maths Chapter 1 Exercise 1.1 Question 2, 3,Read more

    Height of a place above the sea level = 5000 m
    Floating a submarine below the sea level = 1200 m
    ∴ The vertical distance between the plane and the submarine
    = 5000 + 1200 = 6200 m
    Thus, the vertical distance between the plane and the submarine is 6200 m.

    7 Maths Chapter 1 Exercise 1.1 Question 2, 3, 4, 5 & 6

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-1/

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  5. On Monday, temperature at Srinagar = –5°C On Tuesday, temperature dropped = 2°C ∴ Temperature on Tuesday = –5°C – 2°C = –7°C On Wednesday, temperature rose up = 4°C ∴ Temperature on Wednesday = –7°C + 4°C = –3°C Thus, temperature on Tuesday and Wednesday was –7°C and –3°C respectively. 7 Maths ChaptRead more

    On Monday, temperature at Srinagar = –5°C
    On Tuesday, temperature dropped = 2°C
    ∴ Temperature on Tuesday = –5°C – 2°C = –7°C
    On Wednesday, temperature rose up = 4°C
    ∴ Temperature on Wednesday = –7°C + 4°C = –3°C
    Thus, temperature on Tuesday and Wednesday was –7°C and –3°C respectively.

    7 Maths Chapter 1 Exercise 1.1 Question 2, 3, 4, 5 & 6

    for more answers vist to:
    https://www.tiwariacademy.com/ncert-solutions/class-7/maths/chapter-1/

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