Power Play — Class 8 solved problems

3 problems from this chapter, each solved step by step.

1. Find the last two digits of 7^(7^7).

   43

2. A plague infects ten people. Every day, each infected person infects six others. How many people are infected after three days?

   After three days, 2710 people are infected.

3. The exponent of 3 in the prime factorisation of 243 is:

   5

More Class 8 chapters

• A Square and A Cube1 solved
• A Story of Numbers7 solved
• Quadrilaterals3 solved
• Number Play1 solved
• We Distribute, Yet Things Multiply1 solved
• Proportional Reasoning-114 solved
• The Baudhayana-Pythagoras Theorem4 solved
• Proportional Reasoning-22 solved
• Exploring Some Geometric Themes2 solved
• Algebra Play4 solved
• Area2 solved

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