10 is about three centimeters, a book is 10, and 100 million is equal to 100000000, so 100 million books are equal to 1000000 times 10, which is equal to 3000000 centimeters and 3000000 centimeters. The Himalayas are about 8844 meters high, which is 8.844 kilometers, so they are higher than the Himalayas.